April is the fourth month of the year in the Gregorian and Julian calendars. It is the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days. April is commonly associated with the season of

autumn Autumn, also known as fall in American English and Canadian English, is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, in September ( Northern Hemisphere) or March ( Sou ...

in parts of the Southern Hemisphere, and

spring Spring(s) may refer to: Common uses * Spring (season) Spring, also known as springtime, is one of the four temperate seasons, succeeding winter and preceding summer. There are various technical definitions of spring, but local usage of ...

in parts of the

Northern Hemisphere The Northern Hemisphere is the half of Earth that is north of the Equator. For other planets in the Solar System, north is defined as being in the same celestial hemisphere relative to the invariable plane of the solar system as Earth's Nort ...

, where it is the seasonal equivalent to

October October is the tenth month of the year in the Julian and Gregorian calendars and the sixth of seven months to have a length of 31 days. The eighth month in the old calendar of Romulus , October retained its name (from Latin and Greek ''ôct ...

in the Southern Hemisphere and vice versa.

History

The Romans gave this month the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

name ''

Aprilis ''Aprilis'' or ''mensis Aprilis'' (April) was the second month of the ancient Roman calendar, following '' Martius'' (March) and preceding '' Maius'' (May). On the oldest Roman calendar that had begun with March, ''Aprilis'' was the second of ten ...

''"April" in ''

Chambers's Encyclopædia ''Chambers's Encyclopaedia'' was founded in 1859Chambers, W. & R"Concluding Notice"in ''Chambers's Encyclopaedia''. London: W. & R. Chambers, 1868, Vol. 10, pp. v–viii. by William Chambers (publisher), William and Robert Chambers (publisher ...

''. London:

George Newnes Sir George Newnes, 1st Baronet (13 March 1851 – 9 June 1910) was a British publisher and editor and a founding figure in popular journalism. Newnes also served as a Liberal Party Member of Parliament for two decades. His company, George Newnes ...

, 1961, Vol. 1, p. 497. but the derivation of this name is uncertain. The traditional etymology is from the verb ''aperire'', "to open", in allusion to its being the season when trees and flowers begin to "open", which is supported by comparison with the modern Greek use of άνοιξη (''ánixi'') (opening) for spring. Since some of the Roman months were named in honor of divinities, and as April was sacred to the goddess

Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never fa ...

, her

Veneralia The Veneralia was an ancient Roman festival celebrated April 1 (the Kalends of ''Aprilis'') in honor of Venus Verticordia ("Venus the changer of hearts") and Fortuna Virilis ("Manly" or "Virile Fortune"). The cult of Venus Verticordia was establ ...

being held on the first day, it has been suggested that Aprilis was originally her month Aphrilis, from her equivalent Greek goddess name

Aphrodite Aphrodite ( ; grc-gre, Ἀφροδίτη, Aphrodítē; , , ) is an ancient Greek goddess associated with love, lust, beauty, pleasure, passion, and procreation. She was syncretized with the Roman goddess . Aphrodite's major symbols include ...

(''Aphros''), or from the

Etruscan __NOTOC__ Etruscan may refer to: Ancient civilization *The Etruscan language, an extinct language in ancient Italy *Something derived from or related to the Etruscan civilization **Etruscan architecture **Etruscan art **Etruscan cities ** Etrusca ...

name '' Apru''.

Jacob Grimm Jacob Ludwig Karl Grimm (4 January 1785 – 20 September 1863), also known as Ludwig Karl, was a German author, linguist, philologist, jurist, and folklorist. He is known as the discoverer of Grimm's law of linguistics, the co-author of th ...

suggests the name of a hypothetical god or hero, ''Aper'' or ''Aprus''. April was the second month of the earliest

Roman calendar The Roman calendar was the calendar used by the Roman Kingdom and Roman Republic. The term often includes the Julian calendar established by the reforms of the Roman dictator, dictator Julius Caesar and Roman emperor, emperor Augustus in the ...

, before ''

Ianuarius ''Ianuarius'', fully ''Mensis Ianuarius'' ("month of Janus"), was the first month of the ancient Roman calendar, from which the Julian and Gregorian month of January derived. It was followed by '' Februarius'' (" February"). In the calendars ...

'' and ''

Februarius ''Februarius'', fully ''Mensis Februarius'' ("month of Februa"), was the shortest month of the Roman calendar from which the Julian and Gregorian month of February derived. It was eventually placed second in order, preceded by ''Ianuarius'' (" ...

'' were added by King

Numa Pompilius Numa Pompilius (; 753–672 BC; reigned 715–672 BC) was the legendary second king of Rome, succeeding Romulus after a one-year interregnum. He was of Sabine origin, and many of Rome's most important religious and political institutions are a ...

about 700 BC. It became the fourth month of the calendar year (the year when twelve months are displayed in order) during the time of the

decemvirs The decemviri or decemvirs (Latin for "ten men") were some of the several 10-man commissions established by the Roman Republic. The most important were those of the two Decemvirates, formally the " decemvirate with consular power for writing ...

about 450 BC, when it also was given 29 days. The 30th day was added during the reform of the calendar undertaken by

Julius Caesar Gaius Julius Caesar (; ; 12 July 100 BC – 15 March 44 BC), was a Roman general and statesman. A member of the First Triumvirate, Caesar led the Roman armies in the Gallic Wars before defeating his political rival Pompey in a civil war, and ...

in the mid-40s BC, which produced the Julian calendar. The

Anglo-Saxons The Anglo-Saxons were a Cultural identity, cultural group who inhabited England in the Early Middle Ages. They traced their origins to settlers who came to Britain from mainland Europe in the 5th century. However, the ethnogenesis of the Anglo- ...

called April ''ēastre-monaþ''. The

Venerable Bede Bede ( ; ang, Bǣda , ; 672/326 May 735), also known as Saint Bede, The Venerable Bede, and Bede the Venerable ( la, Beda Venerabilis), was an English monk at the monastery of St Peter and its companion monastery of St Paul in the Kingdom o ...

says in ''

The Reckoning of Time ''The Reckoning of Time'' ( la, De temporum ratione) is an Anglo-Saxon era treatise written in Medieval Latin by the Northumbrian monk Bede in 725. The treatise includes an introduction to the traditional ancient and medieval view of the cosmo ...

'' that this month ''ēastre'' is the root of the word

Easter Easter,Traditional names for the feast in English are "Easter Day", as in the '' Book of Common Prayer''; "Easter Sunday", used by James Ussher''The Whole Works of the Most Rev. James Ussher, Volume 4'') and Samuel Pepys''The Diary of Samuel ...

. He further states that the month was named after a goddess '' Eostre'' whose feast was in that month. It is also attested by

Einhard Einhard (also Eginhard or Einhart; la, E(g)inhardus; 775 – 14 March 840) was a Frankish scholar and courtier. Einhard was a dedicated servant of Charlemagne and his son Louis the Pious; his main work is a biography of Charlemagne, the ''Vita ...

in his work,

Vita Karoli Magni ''Vita Karoli Magni'' (''Life of Charlemagne'') is a biography of Charlemagne, King of the Franks and Holy Roman Emperor, written by Einhard.Ogg, p. 109 The ''Life of Charlemagne'' is a 33 chapter long account starting with the full of the Mero ...

St George Saint George (Greek language, Greek: Γεώργιος (Geórgios), Latin language, Latin: Georgius, Arabic language, Arabic: القديس جرجس; died 23 April 303), also George of Lydda, was a Christians, Christian who is venerated as a sa ...

's day is the twenty-third of the month; and

St Mark Mark the Evangelist ( la, Marcus; grc-gre, Μᾶρκος, Mârkos; arc, ܡܪܩܘܣ, translit=Marqōs; Ge'ez: ማርቆስ; ), also known as Saint Mark, is the person who is traditionally ascribed to be the author of the Gospel of Mark. Accor ...

's Eve, with its superstition that the ghosts of those who are doomed to die within the year will be seen to pass into the church, falls on the twenty-fourth. In

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and ...

the symbolic of the earth by the emperor and princes of the blood took place in their third month, which frequently corresponds to April. In Finnish April is ''huhtikuu'', meaning ''

slash-and-burn Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegeta ...

moon'', when

gymnosperm The gymnosperms ( lit. revealed seeds) are a group of seed-producing plants that includes conifers, cycads, ''Ginkgo'', and gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in el, γυμνό� ...

s for beat and burn clearing of farmland were felled. In Slovene, the most established traditional name is ''mali traven'', meaning the month when plants start growing. It was first written in 1466 in the Škofja Loka manuscript. The month Aprilis had 30 days;

made it 29 days long; finally

’s calendar reform made it again 30 days long, which was not changed in the calendar revision of

Augustus Caesar Caesar Augustus (born Gaius Octavius; 23 September 63 BC – 19 August AD 14), also known as Octavian, was the first Roman emperor; he reigned from 27 BC until his death in AD 14. He is known for being the founder of the Roman Pri ...

in 8 BC. Additionally in the Spanish colony, Las Islas Filipinas (now known as the Philippines), the month Aprilis had a significant meaning to the life of the natives as it was associated to the influence of the Chinese during the Spanish colonial period. The importance of this aspect to the lives of the natives was formerly associated to an event called "Abril na Ikaw" as it is closely linked to the famous trader, April Yu. In

Ancient Rome In modern historiography, ancient Rome refers to Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom (753–509 B ...

, the festival of

Cerealia In ancient Roman religion, the Cerealia was the major festival celebrated for the grain goddess Ceres. It was held for seven days from mid- to late April. Various agricultural festivals were held in the "last half of April". The Cerealia celebra ...

was held for seven days from mid-to-late April, but exact dates are uncertain.

Feriae Latinae The ''Feriae Latinae'' or Latin Festival was an ancient Roman religious festival held in April on the Alban Mount. The date varied, and was determined and announced by the consuls each year when they took office. It was one of the most ancient fe ...

was also held in April, with the date varying. Other ancient Roman observances include

(April 1),

Megalesia The Megalesia, Megalensia, or Megalenses Ludi, was a festival celebrated in Ancient Rome from April 4 to April 10, in honour of Cybele, known to Romans as ''Magna Mater'' (Great Mother). The name of the festival derives from Greek ''Megale'' (μϵ� ...

(April 10–16),

Fordicidia In ancient Roman religion, the Fordicidia was a festival of fertility, held on the Ides of April (April 15), that pertained to farming and animal husbandry. It involved the sacrifice of a pregnant cow to Tellus, the ancient Roman goddess of the E ...

(April 15),

Parilia upright=1.5, ''Festa di Pales, o L'estate'' (1783), a reimagining of the Festival of Pales by Joseph-Benoît Suvée The Parilia is an ancient Roman festival of rural character performed annually on 21 April, aimed at cleansing both sheep and sh ...

(April 21), Vinalia Urbana, Robigalia, and

Serapia The Serapia or Sarapia was a Roman Imperial religious festival devoted to the Greco-Egyptian god Serapis. It is found as an official holiday on 25 April as late as the Calendar of Filocalus in 354 AD. In farmers' almanacs ''( menologia rustica)' ...

were celebrated on (April 25).

Floralia The Floralia was a festival in ancient Roman religious practice in honor of the goddess Flora, held April 27 during the Republican era, or April 28 in the Julian calendar. The festival included ''Ludi Florae'', the "Games of Flora", which lasted ...

was held April 27 during the

Republican era Republican Era can refer to: * Minguo calendar, the official era of the Republic of China It may also refer to any era in a country's history when it was governed as a republic or by a Republican Party. In particular, it may refer to: * Roman Rep ...

, or April 28 on the

Julian calendar The Julian calendar, proposed by Roman consul Julius Caesar in 46 BC, was a reform of the Roman calendar. It took effect on , by edict. It was designed with the aid of Greek mathematicians and astronomers such as Sosigenes of Alexandr ...

, and lasted until May 3. However, these dates do not correspond to the modern

Gregorian calendar The Gregorian calendar is the calendar used in most parts of the world. It was introduced in October 1582 by Pope Gregory XIII as a modification of, and replacement for, the Julian calendar. The principal change was to space leap years dif ...

. The

Lyrids The April Lyrids are a meteor shower lasting from April 16 to April 25 each year. The radiant of the meteor shower is located in the constellation Lyra, near its brightest star, Vega. The peak of the shower is typically around April 22 each year. ...

meteor shower A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky. These meteors are caused by streams of cosmic debris called meteoroids entering Earth's atmosphere at extre ...

appears on April 16 – April 26 each year, with the peak generally occurring on April 22.

Eta Aquariids The Eta Aquariids are a meteor shower associated with Halley's Comet. The shower is visible from about April 19 to about May 28 each year with peak activity on or around May 5. Unlike most major annual meteor showers, there is no sharp peak for ...

meteor shower also appears in April. It is visible from about April 21 to about May 20 each year with peak activity on or around May 6. The

Pi Puppids The pi Puppids are a meteor shower associated with the comet 26P/Grigg-Skjellerup. The meteor stream was viewable around April 23 but only in years around the parent comet's perihelion date, the last being in 2003. However, as the planet Jupit ...

appear on April 23, but only in years around the parent comet's

perihelion An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. For example, the apsides of the Earth are called the aphelion and perihelion. General description There are two apsides in any ellip ...

date. The

Virginids The Virginids are a meteor shower. There are many major and minor meteor shower streams that occur during the Virginid Complex, including the Alpha Virginids, Gamma Virginids, Eta Virginids, Theta Virginids, Iota Virginids, Lambda Virginids, Mu Virg ...

also shower at various dates in April. The "Days of April" (''journées d'avril'') is a name assigned in French history to a series of insurrections at Lyons, Paris and elsewhere, against the government of

Louis Philippe Louis Philippe (6 October 1773 – 26 August 1850) was King of the French from 1830 to 1848, and the penultimate monarch of France. As Louis Philippe, Duke of Chartres, he distinguished himself commanding troops during the Revolutionary War ...

in 1834, which led to violent repressive measures, and to a famous trial known as the ''procès d'avril''.

April symbols

April's

birthstone A birthstone is a gemstone A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rock ...

is the

diamond Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the Chemical stability, chemically stable form of car ...

. *

The

birth flower Floriography (language of flowers) is a means of cryptological communication through the use or arrangement of flowers. Meaning has been attributed to flowers for thousands of years, and some form of floriography has been practiced in tradition ...

is typically listed as either the

common daisy ''Bellis perennis'' (), the daisy, is a European species of the family Asteraceae, often considered the archetypal species of the name daisy. To distinguish this species from other plants known as daisies, it is sometimes qualified as common dais ...

''(Bellis perennis)'' or the

sweet pea The sweet pea, ''Lathyrus odoratus'', is a flowering plant in the genus ''Lathyrus'' in the family Fabaceae ( legumes), native to Sicily, southern Italy and the Aegean Islands. It is an annual climbing plant, growing to a height of , where sui ...

. * The

zodiac The zodiac is a belt-shaped region of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the Sun path, apparent path of the Sun across the celestial sphere over the course of the year. ...

signs for the month of April are

Aries Aries may refer to: *Aries (astrology), an astrological sign *Aries (constellation), a constellation of stars in the zodiac Arts, entertainment and media * ''Aries'' (album), by Luis Miguel, 1993 * ''Aries'' (EP), by Alice Chater, 2020 * "Aries" ...

(until April 19) and

Taurus Taurus is Latin for 'bull' and may refer to: * Taurus (astrology), the astrological sign * Taurus (constellation), one of the constellations of the zodiac * Taurus (mythology), one of two Greek mythological characters named Taurus * '' Bos tauru ...

(April 20 onwards).. Signs in UT/GMT for 1950–2030.

April observances

''This list does not necessarily imply either official status nor general observance.''

Month-long observances

*In

Catholic The Catholic Church, also known as the Roman Catholic Church, is the largest Christian church, with 1.3 billion baptized Catholics worldwide . It is among the world's oldest and largest international institutions, and has played a ...

Protestant Protestantism is a Christian denomination, branch of Christianity that follows the theological tenets of the Reformation, Protestant Reformation, a movement that began seeking to reform the Catholic Church from within in the 16th century agai ...

and

Orthodox Orthodox, Orthodoxy, or Orthodoxism may refer to: Religion * Orthodoxy, adherence to accepted norms, more specifically adherence to creeds, especially within Christianity and Judaism, but also less commonly in non-Abrahamic religions like Neo-pa ...

tradition A tradition is a belief or behavior (folk custom) passed down within a group or society with symbolic meaning or special significance with origins in the past. A component of cultural expressions and folklore, common examples include holidays or ...

, April is the Month of the Resurrection of the Lord. April and March are the months in which is celebrated the moveable

Feast A banquet (; ) is a formal large meal where a number of people consume food together. Banquets are traditionally held to enhance the prestige of a host, or reinforce social bonds among joint contributors. Modern examples of these purposes i ...

Easter Sunday Easter,Traditional names for the feast in English are "Easter Day", as in the ''Book of Common Prayer''; "Easter Sunday", used by James Ussher''The Whole Works of the Most Rev. James Ussher, Volume 4'') and Samuel Pepys''The Diary of Samuel ...

. *

National Pet Month ''National Pet Month'' is a celebration of the benefits that pets bring to people's lives - and vice versa. It is observed annually in the United States in May and during the month of April in the United Kingdom The United Kingdom of Great B ...

(

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

)

United States

Arab American Heritage Month National Arab American Heritage Month (NAAHM) takes place in April. It celebrates the Arab American heritage and culture and pays tribute to the contributions of Arab Americans and Arabic-speaking Americans. History Beginning in the 1990s, Arab A ...

*Autism Awareness Month *

Cancer Control Month Cancer Control Month is a month-long United States observance established by . 2013 edition (a) The president is requested to issue each year a proclamation— :(1) designating April as Cancer Control Month; :(2) to invite each year the chief ...

Community College A community college is a type of educational institution. The term can have different meanings in different countries: many community colleges have an "open enrollment" for students who have graduated from high school (also known as senior sec ...

Awareness Month *

Confederate History Month Confederate History Month is a month designated by seven state governments in the Southern United States for the purpose of recognizing and honoring the history of the Confederate States of America. April has traditionally been chosen, as Confeder ...

(

Alabama (We dare defend our rights) , anthem = "Alabama (state song), Alabama" , image_map = Alabama in United States.svg , seat = Montgomery, Alabama, Montgomery , LargestCity = Huntsville, Alabama, Huntsville , LargestCounty = Baldwin County, Al ...

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

Louisiana Louisiana , group=pronunciation (French: ''La Louisiane'') is a state in the Deep South and South Central regions of the United States. It is the 20th-smallest by area and the 25th most populous of the 50 U.S. states. Louisiana is borde ...

Mississippi Mississippi () is a state in the Southeastern region of the United States, bordered to the north by Tennessee; to the east by Alabama; to the south by the Gulf of Mexico; to the southwest by Louisiana; and to the northwest by Arkansas. Miss ...

Texas Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...

) * Donate Life Month *

Financial Literacy Month Financial Literacy Month is recognized annually in Canada in November, and National Financial Literacy Month was recognized in the United States in April 2004, Sponsored by Sen. Daniel Akaka D-HI. in an effort to highlight the importance of financi ...

* Jazz Appreciation Month * Mathematics and Statistics Awareness Month * Month of the Military Child *

National Poetry Month National Poetry Month, a celebration of poetry which takes place each April, was introduced in 1996 and is organized by the Academy of American Poets as a way to increase awareness and appreciation of poetry in the United States. The Academy of Amer ...

* National Poetry Writing Month * Occupational Therapy Month * National Prevent Child Abuse Month * National Volunteer Month * Parkinson's Disease Awareness Month *Rosacea Awareness Month *

Sexual Assault Awareness Month Sexual Assault Awareness Month (SAAM) is an annual campaign to raise public awareness about sexual assault and educate communities and individuals on how to prevent sexual violence. It is observed in April. Each year during the month of April, s ...

United States Food months

*Fresh Florida Tomato Month *National Food Month *National Grilled Cheese Month *National Pecan Month *National Soft Pretzel Month *National Soyfoods Month

Non-Gregorian observances: 2021

''(All Baha'i, Islamic, and Jewish observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted.)'' *

List of observances set by the Bahá'í calendar A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union ...

List of observances set by the Chinese calendar The traditional Chinese holidays are an essential part of harvests or prayer offerings. The most important Chinese holiday is the Chinese New Year (Spring Festival), which is also celebrated in overseas ethnic Chinese communities (for example in ...

List of observances set by the Hebrew calendar All observances begin at sunset the day prior to the Gregorian date listed unless otherwise noted, and end on nightfall of the date in question, which is defined as the appearance of three stars in the sky. On leap years (which occur every 2– ...

List of observances set by the Islamic calendar All Islamic observances begin at the sundown prior to the date listed, and end at sundown of the date in question unless otherwise noted. Holidays for 1441 (2019-2020) {, class="wikitable" !width=20%, Date on Islamic Calendar !width=20%, Gre ...

List of observances set by the Solar Hijri calendar Dates in this table are determined by when the March Equinox falls. It will fall on March 20 from 2018-2023. {, class="wikitable" , - style="background:#efefef;" ! Holiday date !!Holiday name !! Description !!March equinox on March 19 !!March Eq ...

Movable observances, 2021 dates

Youth Homelessness Matters Day Youth Homelessness Matters Day (YHMD), according to the National Youth Coalition for Housing the 2018 Youth Homelessness Matters day was held on 18 April 2018. YHMD is an annual day which seeks to highlight the issue of youth homelessness in Austra ...

* National Health Day (

Kiribati Kiribati (), officially the Republic of Kiribati ( gil, ibaberikiKiribati),Kiribati
''The Wor ...

): April 6 * Oral, Head and Neck Cancer Awareness Week (

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

): April 13–19 * National Park Week (

): April 18–26 *

Crime Victims' Rights Week National Crime Victims' Rights Week is an annual commemoration in the United States that promotes victims' rights and services. The week is marked by an award ceremony held in Washington, D.C., in which individuals and organizations that demonstra ...

(

): April 19–25 *

National Volunteer Week National Volunteer Week is an annual celebration observed in many countries, to promote and show appreciation for volunteerism and volunteering. In the United States, it is organized by the Points of Light Points of Light is an internationa ...

: April 19–25 *

European Immunization Week European Immunization Week (EIW) is an annual regional initiative, coordinated by the World Health Organization Regional Office for Europe (WHO/Europe), to promote immunization against vaccine-preventable diseases since its launch in 2008. EIW acti ...

: April 20–26 *

Day of Silence Day of Silence is GLSEN's annual day of action to spread awareness about the effects of the bullying and harassment of lesbian, gay, bisexual, transgender, queer, and questioning (LGBTQ) students. In the United States, students take a day-lo ...

(

): April 24 * Pay It Forward Day: April 28 (

International observance Lists of holidays by various categorizations. Religious holidays Abrahamic holidays (Middle Eastern) Jewish holidays *Chag HaMatzot (Feast of Unleavened bread, Unleavened Bread – 7 days of consumption of matzo with wine and avoidance ...

) *

Denim Day Denim Day takes place on the last Wednesday of April, which is Sexual Assault Awareness Month. This day of action and awareness is an event in which people are encouraged to wear denim to combat victim blaming and educate others about sexual viole ...

: April 29 (

) *

Day of Dialogue In the United States, the Day of Dialogue (formerly Day of Truth) is the Christian fundamentalist group Focus on the Family's annual event to oppose LGBTQ rights. It was founded by the Alliance Defense Fund in 2005 to oppose the Day of Silence, ...

(

) *

Vaccination Week In The Americas Vaccination Week In The Americas (VWA) is an annual public health campaign by the member states of the Pan American Health Organization (PAHO) to promote equity and access to immunization. It is marked each year during the last week of April. Sin ...

*See: List of movable Western Christian observances *See:

List of movable Eastern Christian observances This is a chronological list of moveable Eastern Christian observances. Most of these are calculated by the date of Pascha. It includes secular observances which are calculated by religious observances. ''This list does not necessarily imply eith ...

First Wednesday: April 1

* National Day of Hope (

)

First Saturday: April 4

* Ulcinj Municipality Day (

Ulcinj Ulcinj ( cyrl, Улцињ, ; ) is a town on the southern coast of Montenegro and the capital of Ulcinj Municipality. It has an urban population of 10,707 (2011), the majority being Albanians. As one of the oldest settlements in the Adriatic coast ...

Montenegro ) , image_map = Europe-Montenegro.svg , map_caption = , image_map2 = , capital = Podgorica , coordinates = , largest_city = capital , official_languages = M ...

)

First Sunday: April 5

Daylight saving time Daylight saving time (DST), also referred to as daylight savings time or simply daylight time (United States, Canada, and Australia), and summer time (United Kingdom, European Union, and others), is the practice of advancing clocks (typicall ...

ends (

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

and

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

) * Geologists Day (former

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...

countries) *

Kanamara Matsuri The Shinto is an annual Japanese festival held each spring at the in Kawasaki, Japan. The exact dates vary: the main festivities fall on the first Sunday in April. The phallus, as the central theme of the event, is reflected in illustrations, c ...

( Kawasaki, Japan) *

Opening Day Opening Day is the day on which professional baseball leagues begin their regular season. For Major League Baseball (MLB) and most of the American minor leagues, this day typically falls during the first week of April, although in recent years ...

(

)

First full week: April 5–11

National Library Week First sponsored in 1958, National Library Week (NLW) is a national observance sponsored by the American Library Association (ALA) and Library, libraries across the United States each April, typically the second full week. It promotes library use a ...

(

) ** National Library Workers Day (

) (Tuesday of National Library week, April 4) ** National Bookmobile Day (Wednesday of National Library week, April 5) * National Public Health Week (

) * National Public Safety Telecommunicators Week (

)

= Second Wednesday: April 8

= *

International Day of Pink The International Day of Pink is a worldwide anti-bullying and anti-homophobia event held annually during the second week of April. Though similar to Pink Shirt Day (held in February) in that it also seeks to end all bullying, the Day of Pink is ...

= Second Thursday: April 9

= *

National Former Prisoner of War Recognition Day In the United States, National POW/MIA Recognition Day is observed on the third Friday in September. It honors those who were prisoners of war (POWs) and those who are still missing in action (MIA). It is most associated with those who were POWs d ...

(

)

= Second Friday of April: April 10

= * Fast and Prayer Day (

Liberia Liberia (), officially the Republic of Liberia, is a country on the West African coast. It is bordered by Sierra Leone to Liberia–Sierra Leone border, its northwest, Guinea to its north, Ivory Coast to its east, and the Atlantic Ocean ...

) * Air Force Day (

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

) * Kamakura Matsuri at Tsurugaoka Hachiman (

Kamakura is a city in Kanagawa Prefecture, Japan. Kamakura has an estimated population of 172,929 (1 September 2020) and a population density of 4,359 persons per km² over the total area of . Kamakura was designated as a city on 3 November 1939. Kamak ...

, Japan), lasts until third Sunday.

Second Sunday: April 12

Children's Day Children's Day is a commemorative date celebrated annually in honor of children, whose date of observance varies by country. In 1925, International Children's Day was first proclaimed in Geneva during the World Conference on Child Welfare. Sin ...

(

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

)

Week of April 14: April 12–18

* Pan-American Week (

)

Third Wednesday: April 15

Administrative Professionals' Day Administrative Professionals Day (also known as Secretaries Day or Admin Day) is a day observed yearly in a small number of countries. It is not a public holiday in any of them. In some countries, it falls within Administrative Professionals Week ...

(

)

Third Thursday: April 16

* National High Five Day (

)

Third Saturday: April 18

Record Store Day Record Store Day is an annual event inaugurated in 2007 and held on one Saturday (typically the third) every April and every Black Friday in November to "celebrate the culture of the independently owned record store". The day brings together fa ...

(

)

Last full week of April: April 19–25

* Administrative Professionals Week (

Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

) *

World Immunization Week World Immunization Week is a global public health campaign to raise awareness and increase rates of immunization against vaccine-preventable diseases around the world. It takes place each year during the last week of April (24th - 30th). Immuniza ...

Week of April 23: April 19–25

* Canada Book Week (

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

)

Week of the
New Moon In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude. At this phase, the lunar disk is not visible to the naked eye, except when it is silhouetted against the Sun during a solar eclipse. ...
: April 19–25

* National Dark-Sky Week (

)

Third Monday: April 20

Patriots' Day Patriots' Day (Patriot's Day in Maine) is an annual event, formalized as a legal holiday or a special observance day in six states, commemorating the battles of Lexington, Concord, and Menotomy, some of the first battles of the American Revo ...

(

Massachusetts Massachusetts (Massachusett language, Massachusett: ''Muhsachuweesut assachusett writing systems, məhswatʃəwiːsət'' English: , ), officially the Commonwealth of Massachusetts, is the most populous U.S. state, state in the New England ...

Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and north ...

) *

Queen's Official Birthday The King's Official Birthday (alternatively the Queen's Official Birthday when the monarch is female) is the selected day in the United Kingdom and most Commonwealth realms on which the birthday of the monarch is officially celebrated in those ...

(

Saint Helena, Ascension and Tristan da Cunha Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic and consisting of the island of Saint Helena, Ascension Island and the archipelago of Tristan da Cunha including Gough Island. Its name wa ...

) *

Sechseläuten The ''Sechseläuten'' (Zürich German: ''Sächsilüüte'', "The six o'clock ringing of the bells") is a traditional spring holiday in the Swiss city of Zürich celebrated in its current form, usually on the 3rd Monday of April, since the early 2 ...

(

Zürich Zürich () is the list of cities in Switzerland, largest city in Switzerland and the capital of the canton of Zürich. It is located in north-central Switzerland, at the northwestern tip of Lake Zürich. As of January 2020, the municipality has 43 ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

)

= Wednesday of last full week of April: April 22

= *

(

Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China ( abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delt ...

)

First Thursday after April 18: April 23

First Day of Summer The first day of summer ( ) is an annual public holiday in Iceland that is celebrated on the first Thursday after 18 April (some time between 19-25 April). It is a celebration of the start of the first summer month () of the old Icelandic cale ...

(

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

)

= Fourth Thursday: April 23

= *

Take Our Daughters And Sons To Work Day Take Our Daughters And Sons To Work Day, also termed Take Your Child to Work Day, is a national day that gives children in the United States a glimpse into the working world. Developed by the Take Our Daughters And Sons To Work Foundation, a 501 ...

(

)

= Last Friday: April 24

= *

Arbor Day Arbor Day (or Arbour in some countries) is a secular day of observance in which individuals and groups are encouraged to plant trees. Today, many countries observe such a holiday. Though usually observed in the spring, the date varies, dependi ...

(

) *

Día de la Chupina The ''Día de la Chupina'' (Spanish, literally Hooky Day) is a popular event and self-styled " holiday" created by secondary school students in the city of Rosario, Argentina Argentina (), officially the Argentine Republic ( es, link=no, ...

(

Rosario Rosario () is the largest city in the central provinces of Argentina, Argentine province of Santa Fe Province, Santa Fe. The city is located northwest of Buenos Aires, on the west bank of the Paraná River. Rosario is the third-most populous ci ...

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

)

Last Friday in April to first Sunday in May: April 24-May 3

* Arbour Week in

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Ca ...

= Last Saturday: April 25

= *

(

Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the Car ...

) * National Rebuilding Day (

) * National Sense of Smell Day (

) *

World Tai Chi and Qigong Day World Tai Chi and Qigong Day (WTCQD), also spelled World T'ai Chi and Ch'i Kung Day, is an annual event held the last Saturday of April each year to promote the related disciplines of T'ai chi ch'uan and Qigong in nearly eighty countries since 199 ...

= Last Sunday: April 26

= * Flag Day (

Åland Åland ( fi, Ahvenanmaa: ; ; ) is an Federacy, autonomous and Demilitarized zone, demilitarised region of Finland since 1920 by a decision of the League of Nations. It is the smallest region of Finland by area and population, with a size of 1 ...

Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of B ...

) * Turkmen Racing Horse Festival (

Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...

)

= April 27 (moves to April 26 if April 27 is on a Sunday): April 27

= *

Koningsdag ''Koningsdag'' () or King's Day is a national holiday in the Kingdom of the Netherlands. Celebrated on 27 April (26 April if the 27th is a Sunday), the date marks the birth of King Willem-Alexander. When the Dutch monarch is female, the holi ...

(

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

)

= Last Monday: April 27

= *

Confederate Memorial Day Confederate Memorial Day (called Confederate Heroes Day in Texas and Florida, and Confederate Decoration Day in Tennessee) is a cultural holiday observed in several Southern U.S. states on various dates since the end of the American Civil War. ...

(

Georgia (U.S. state) Georgia is a state in the Southeastern United States, Southeastern region of the United States, bordered to the north by Tennessee and North Carolina; to the northeast by South Carolina; to the southeast by the Atlantic Ocean; to the south by ...

, and

)

= Last Wednesday: April 29

= * International Noise Awareness Day

Fixed observances

April 1 Events Pre-1600 * 33 – According to one historian's account, Jesus Christ's Last Supper is held. * 527 – Byzantine Emperor Justin I names his nephew Justinian I as co-ruler and successor to the throne. *1081 – Alexios I Kom ...

April Fools' Day April Fools' Day or All Fools' Day is an annual custom on 1 April consisting of practical jokes and hoaxes. Jokesters often expose their actions by shouting "April Fools!" at the recipient. Mass media can be involved in these pranks, which may ...

(

Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and ...

) **

Civil Service Day Public holidays in Thailand are regulated by the government, and most are observed by both the public and private sectors. There are usually nineteen public holidays in a year, but more may be declared by the cabinet. Other observances, both offic ...

(

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...

) ** Cyprus National Day (

Cyprus Cyprus ; tr, Kıbrıs (), officially the Republic of Cyprus,, , lit: Republic of Cyprus is an island country located south of the Anatolian Peninsula in the eastern Mediterranean Sea. Its continental position is disputed; while it is geo ...

) **

Edible Book Day The International Edible Book Festival is an list of minor secular observances#April, annual event usually held on or around April 1, which is also known as Edible Book Day. The global event has been celebrated since 2000 in various parts of the w ...

** Fossil Fools Day **

Kha b-Nisan Kha may refer to: * Kha (Bengali), a letter * Kha (Cyrillic), a letter * Kha (Indic), a consonant * Ḫāʾ (sometimes khā), Arabic letter خ * Kha, an ancient Egyptian architect and overseer, in Theban Tomb 8, TT8 * Kitty Hawk Aircargo ''For ...

( Assyrian people) ** National Civil Service Day (

) **

Odisha Day Odisha Day, also Utkala Dibasa, is celebrated on 1 April in the Indian state of Odisha in memory of the formation of the state as a separate state out of Bihar and Orissa Province with addition of Koraput and Ganjam from the Madras Presidency on ...

(

Odisha Odisha (English: , ), formerly Orissa ( the official name until 2011), is an Indian state located in Eastern India. It is the 8th largest state by area, and the 11th largest by population. The state has the third largest population of ...

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

) **Start of Testicular Cancer Awareness week (

), April 1–7 **

Season for Nonviolence Season for Nonviolence was established in 1998 by Arun Gandhi, Mohandas Gandhi's grandson, as a yearly event celebrating the philosophies and lives of Mohandas Gandhi and Martin Luther King Jr. The idea was developed with the help of Dr. Michael Be ...

January 30 – April 4 *

April 2 Events Pre-1600 *1513 – Having spotted land on March 27, Spanish explorer Juan Ponce de León comes ashore on what is now the U.S. state of Florida, landing somewhere between the modern city of St. Augustine and the mouth of the St. Jo ...

** International Children's Book Day (

) **

Malvinas Day Malvinas Day (), officially Day of the Veterans and Fallen of the Malvinas War (''Día del Veterano y de los Caídos en la Guerra de las Malvinas''), is a public holiday in Argentina, observed each year on 2 April. The name refers to the Falkl ...

(

) ** National Peanut Butter and Jelly Day (

) **

Thai Heritage Conservation Day Public holidays in Thailand are regulated by the government, and most are observed by both the public and private sectors. There are usually nineteen public holidays in a year, but more may be declared by the cabinet. Other observances, both offi ...

(

) **

Unity of Peoples of Russia and Belarus Day National holidays in Belarus are classified into state holidays and other holidays and commemorative days, including religious holidays. Nine of them are non-working days. Public holidays (non-working days) Other holidays State Comme ...

(

Belarus Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by R ...

) **

World Autism Awareness Day World Autism Awareness Day is an internationally recognized day annually on April 2nd, encouraging Member States of the United Nations to take measures to raise awareness about autistic individuals throughout the world. It was designated by the ...

(

) *

April 3 Events Pre-1600 * 686 – Maya king Yuknoom Yich'aak K'ahk' assumes the crown of Calakmul. * 1043 – Edward the Confessor is crowned King of England. * 1077 – The Patriarchate of Friûl, the first Friulian state, is created ...

April 4 Events Pre-1600 * 503 BC – Roman consul Agrippa Menenius Lanatus celebrates a triumph for a military victory over the Sabines. * 190 – Dong Zhuo has his troops evacuate the capital Luoyang and burn it to the ground. * 611 – ...

(

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort ...

) ** Independence Day (Senegal) ** International Day for Mine Awareness and Assistance in Mine Action **

Peace Day (Angola) Angola has twelve public holidays that can be increased by bridge holidays if a holiday falls on a Tuesday or Thursday. 2022 has fifteen national holidays. Notes References Angola Angolan culture Society of Angola Holidays A holi ...

* April 5 **

(

Palestinian territories The Palestinian territories are the two regions of the former British Mandate for Palestine that have been militarily occupied by Israel since the Six-Day War of 1967, namely: the West Bank (including East Jerusalem) and the Gaza Strip. The I ...

) ** National Caramel Day (United States) **

Sikmogil Singmogil or Sikmogil ( ko, 식목일, hanja: 植木日) is a holiday in South Korea, the Korean Arbor Day. It is celebrated annually on April 5. Background The idea of Singmogil was to celebrate forestry and the development of national history. T ...

(South Korea) *

April 6 Events Pre–1600 *46 BC – Julius Caesar defeats Caecilius Metellus Scipio and Marcus Porcius Cato (Cato the Younger) at the Battle of Thapsus. * 402 – Stilicho defeats the Visigoths under Alaric in the Battle of Pollentia. *132 ...

** Chakri Day (Thailand) **

National Beer Day (United Kingdom) Beer Day Britain is an annual event celebrating beer in the United Kingdom. The date has been celebrated annually on 15 June since 2015. It is supported by the British Beer and Pub Association, the Society of Independent Brewers (SIBA), and the ...

New Beer's Eve National Beer Day is celebrated in the United States every year on April 7, marking the day that the Cullen–Harrison Act came into force after having been signed into law by President Franklin D. Roosevelt on March 22, 1933. This led to the Ei ...

(United States) ** Tartan Day (United States & Canada) *

April 7 Events Pre-1600 * 451 – Attila the Hun captures Metz in France, killing most of its inhabitants and burning the town. * 529 – First ''Corpus Juris Civilis'', a fundamental work in jurisprudence, is issued by Eastern Roman Empe ...

** Flag Day (Slovenia) ** Genocide Memorial Day (Rwanda), and its related observance: ***

International Day of Reflection on the 1994 Rwanda Genocide The International Day of Reflection on the 1994 Rwandan Genocide was recognized as an international observance by the United Nations on April 7, 2004. Commemorative events for the Rwandan genocide were held in several major cities including Kigali, ...

(

United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and international security, security, develop friendly relations among nations, achieve international cooperation, and be ...

) **

Motherhood and Beauty Day Motherhood and beauty day ( hy, Մայրության և գեղեցկության օր) is an official holiday in Armenia dedicated to women. While March 8 celebrates all women, April 7 is mother's day. April 7 is the Feast of the Annunciation in t ...

(Armenia) **

National Beer Day (United States) National Beer Day is celebrated in the United States every year on April 7, marking the day that the Cullen–Harrison Act came into force after having been signed into law by President Franklin D. Roosevelt on March 22, 1933. This led to the Ei ...

** No Housework Day ** Sheikh Abeid Amani Karume Day (Tanzania) ** Women's Day (Mozambique) **

World Health Day World Health Day is a global health awareness day celebrated every year on 7 April, under the sponsorship of the World Health Organization (WHO), as well as other related organizations. In 1948, the WHO held the First World Health Assembly. ...

(

) *

April 8 Events Pre-1600 * 217 – Roman emperor Caracalla is assassinated and is succeeded by his Praetorian Guard prefect, Marcus Opellius Macrinus. * 876 – The Battle of Dayr al-'Aqul saves Baghdad from the Saffarids. *1139 – Ro ...

Buddha's Birthday Buddha's Birthday (also known as Buddha Jayanti, also known as his day of enlightenment – Buddha Purnima, Buddha Pournami) is a Buddhist festival that is celebrated in most of East Asia and South Asia commemorating the birth of the Gautama ...

(Japan only, other countries follow different calendars) ** Feast of the First Day of the Writing of the Book of the Law (

Thelema Thelema () is a Western esoteric and occult social or spiritual philosophy and new religious movement founded in the early 1900s by Aleister Crowley (1875–1947), an English writer, mystic, occultist, and ceremonial magician. The word '' ...

) **

International Romani Day The International Romani Day (April 8) is a day to celebrate Romani culture and raise awareness of the issues facing Romani people. Origin The day was officially declared in 1990 in Serock, Poland, the site of the fourth World Romani Congress of ...

(

) ** Trading Cards for Grown-ups Day *

April 9 Events Pre-1600 * 193 – The distinguished soldier Septimius Severus is proclaimed emperor by the army in Illyricum. * 475 – Byzantine Emperor Basiliscus issues a circular letter (''Enkyklikon'') to the bishops of his empire, su ...

** Anniversary of the German Invasion of Denmark (Denmark) **

Baghdad Liberation Day This is a list of public holidays in Iraq. Other important dates These are working days at the KRG Council of Ministers, and businesses are open. Special events take place around the Iraqi Kurdistan Region to mark these dates. *10 February: Kur ...

(

Iraqi Kurdistan Iraqi Kurdistan or Southern Kurdistan ( ku, باشووری کوردستان, Başûrê Kurdistanê) refers to the Kurdish-populated part of northern Iraq. It is considered one of the four parts of "Kurdistan" in Western Asia, which also incl ...

) **

Constitution Day (Kosovo) This is a list of public holidays in Kosovo. Annotations See also * Public holidays in Yugoslavia References {{Europe topic, Public holidays in Kosovo Kosovo ( sq, Kosova or ; sr-Cyrl, Косово ), officially the Repub ...

** Day of National Unity (Georgia) ** Day of the Finnish Language (Finland) ** Day of Valor or ''Araw ng Kagitingan'' (Philippines) **

Feast of the Second Day of the Writing of the Book of the Law Thelema () is a Western esoteric and occult social or spiritual philosophy and new religious movement founded in the early 1900s by Aleister Crowley (1875–1947), an English writer, mystic, occultist, and ceremonial magician. The word '' ...

(

) ** International Banshtai Tsai Day **

Martyr's Day (Tunisia) Martyrs' Day is an annual day observed by nations to salute the martyrdom of soldiers who lost their lives defending the sovereignty of the nation. The actual date may vary from one country to another. Here is a list of countries and Martyrs' Days. ...

(United States) ** Remembrance for Haakon Sigurdsson (

The Troth The Troth, formerly the Ring of Troth, is an United States, American-based international Germanic Neopaganism, heathen organization.Vimy Ridge Day Vimy Ridge Day is a day to commemorate the deaths and casualties of members of the Canadian Corps in the Battle of Vimy Ridge, which took place during the First World War. The holiday has been observed annually on 9 April since 2003. It is a no ...

(Canada) *

April 10 Events Pre-1600 * 428 – Nestorius becomes the Patriarch of Constantinople. * 837 – Halley's Comet makes its closest approach to Earth at a distance equal to 0.0342 AU (5.1 million kilometres/3.2 million miles). * 1407 ...

Day of the Builder There are several public holidays in Azerbaijan. Public holidays were regulated in the constitution of the Azerbaijan SSR for the first time on 19 May 1921. They are now regulated by the Constitution of Azerbaijan. Holidays Main holidays Other ...

(Azerbaijan) **

Feast of the Third Day of the Writing of the Book of the Law Thelema () is a Western esoteric and occult social or spiritual philosophy and new religious movement founded in the early 1900s by Aleister Crowley (1875–1947), an English writer, mystic, occultist, and ceremonial magician. The word '' ...

(

) ** Siblings Day (

) *

April 11 Events Pre-1600 * 491 – Flavius Anastasius becomes Byzantine emperor, with the name of Anastasius I. * 1241 – Batu Khan defeats Béla IV of Hungary at the Battle of Mohi. * 1512 – War of the League of Cambrai: Franco-Ferra ...

** Juan Santamaría Day, anniversary of his death in the

Second Battle of Rivas The Second Battle of Rivas occurred on 11 April 1856 between Costa Rican militia under General Mora and the Nicaraguan forces of American mercenary William Walker. The lesser known First Battle of Rivas took place on the 29 June 1855 between ...

. (Costa Rica) ** International Louie Louie Day ** National Cheese Fondue Day (United States) **

World Parkinson's Day James Parkinson (11 April 175521 December 1824) was an English surgeon, apothecary, geologist, palaeontologist and political activist. He is best known for his 1817 work ''An Essay on the Shaking Palsy'', in which he was the first to describe ...

April 12 Events Pre-1600 * 240 – Shapur I becomes co-emperor of the Sasanian Empire with his father Ardashir I. * 467 – Anthemius is elevated to Emperor of the Western Roman Empire. * 627 – King Edwin of Northumbria is converted ...

(Bolivia and Haiti) **Commemoration of first human in space by

Yuri Gagarin Yuri Alekseyevich Gagarin; Gagarin's first name is sometimes transliterated as ''Yuriy'', ''Youri'', or ''Yury''. (9 March 1934 – 27 March 1968) was a Soviet pilot and cosmonaut who became the first human to journey into outer space. Tr ...

: ***

Cosmonautics Day Cosmonautics Day (russian: День Космона́втики, ''Den Kosmonavtiki'') is an anniversary celebrated in Russia and some other former Soviet Union countries on 12 April.

(Russia) ***

International Day of Human Space Flight The International Day of Human Space Flight is the annual celebration, held on 12 April, of the anniversary of the first human space flight by Yuri Gagarin (USSR). It was proclaimed at the 65th session of the United Nations General Assembly on 7 A ...

***

Yuri's Night Yuri's Night is an international celebration held every April 12 to commemorate milestones in space exploration. It is named for the first human to launch into space, Yuri Gagarin, who flew the Vostok 1 spaceship on April 12, 1961. In 2011, Yur ...

(

) **Halifax Day (North Carolina) **List of food days#April, National Grilled Cheese Sandwich Day (United States) **National Redemption Day (Liberia) **Thomas Roy#List of days, Walk on Your Wild Side Day *April 13 **Jefferson's Birthday (United States) **Coma Patients' Day, Katyn Memorial Day (Poland) **Teachers' Day#By country, Teacher's Day (Ecuador) **First day of Thingyan (Myanmar) (April 13–16) **Remembrance days in Slovakia, Unfairly Prosecuted Persons Day (Slovakia) *April 14 **Okinawan festivals and observances, ʔabusibaree (Okinawa Islands, Japan) **B. R. Ambedkar, Ambedkar Jayanti (India) **Black Day (South Korea) **Commemoration of Anfal Genocide Against the Kurds (

) **Dhivehi Language Day (Maldives) **Day of Mologa (Yaroslavl Oblast, Russia) **Day of the Georgian language (Georgia (country)) **Emancipation Day, Season of Emancipation (April 14 to August 23) (Barbados) **N'Ko Alphabet Day (Mande languages, Mande speakers) **Pohela Boishakh (Bangladesh) **Pana Sankranti (

, India) **Puthandu (Tamils) (India, Malaysia, Singapore, Sri Lanka) **Second day of Songkran (Thailand) (Thailand) **Pan American Day (several countries in the Americas) **The first day of Takayama Festival, Takayama Spring Festival (Takayama, Gifu, Japan) **Vaisakh (Punjab (region)), (India and Pakistan) **Youth Day (Angola) *April 15 **Day of the Sun (North Korea). **Hillsborough disaster#Memorials, Hillsborough Disaster Memorial (Liverpool, England) **Jackie Robinson Day (United States) **Pohela Boishakh (West Bengal, India) (Note: celebrated on April 14 in Bangladesh) **Last day of Songkran (Thailand) (Thailand) **Tax Day, the official deadline for filing an individual Tax return (United States), tax return (or requesting an extension). (United States, Philippines) **Universal Day of Culture **World Art Day *April 16 **Birthday of José de Diego (Puerto Rico, United States) **Birthday of Queen Margrethe II (Denmark) **Emancipation Day (Washington, D.C., United States) **Foursquare Day (

) **Memorial Day for the Victims of the Holocaust (Hungary) **List of awareness days#April, National Healthcare Decisions Day (United States) **Remembrance of Chemical Attack on Balisan and Sheikh Wasan (

) **World Voice Day *April 17 **Thomas Roy#List of days, Blah Blah Blah Day **Evacuation Day (Syria) **FAO Day (Iraq) **Flag Day (American Samoa) **Malbec World Day **List of food days#April, National Cheeseball Day (United States) **List of food days#Italy, National Espresso Day (Italy) **Public holidays in Gabon, Women's Day (Gabon) **World Hemophilia Day *April 18 **Anniversary of the Victory over the Teutonic Knights in the Battle of the Ice, 1242 (Russia) **Army Day (Iran) **Coma Patients' Day (Poland) **Día del Amigo, Friend's Day (Brazil) **Independence Day (Zimbabwe) **International Day For Monuments and Sites **Invention Day (Japan) **Thomas Roy#List of days, Pet Owner's Independence Day *April 19 **Army Day (Brazil) **Beginning of the Independence Movement (Venezuela) **History of lysergic acid diethylamide#"Bicycle Day", Bicycle Day **Dutch-American Friendship Day (United States) **Holocaust Remembrance Day (Poland) **Indian Day (Brazil) **King Mswati III's birthday (Eswatini) **Landing of the 33 Patriots Day (Uruguay) **List of food days#April, National Garlic Day (United States) **List of food days#April, National Rice Ball Day (United States) **Primrose Day (United Kingdom) *April 20 **420 (cannabis culture) (International) **UN Chinese Language Day (

) *April 21 **Muster (Texas A&M University)#A. and M. Day, A&M Day (Texas A&M University) **Civil Services of India#Civil Services Day, Civil Service Day (India) **Public holidays in Russia#Regional public holidays, Day of Local Self-Government (Russia) **Grounation Day (Rastafari movement) **Public holidays in Mexico#Civic holidays, Heroic Defense of Veracruz (Mexico) **Public holidays in North Korea, Kang Pan-sok's Birthday (North Korea) **Kartini Day (Indonesia) **Public holidays in Russia, Local Self Government Day (Russia) **Arbor day#Kenya, National Tree Planting Day (Kenya) **San Jacinto Day (

) **

(Falkland Islands) **Public holidays in Brazil, Tiradentes' Day (Brazil) **Vietnam Book Day (Vietnam) *April 22 **Discovery Day (Brazil) **Earth Day (

) and its related observance: ***International Mother Earth Day **Holocaust Memorial Days, Holocaust Remembrance Day (Serbia) **List of food days#April, National Jelly Bean Day (United States) *April 23 **Castile and León Day (Castile and León, Spain) **German Apples Day, German Beer Day (Germany) **Conch Republic, Independence Day (Conch Republic, Key West, Florida) **International Pixel-Stained Technopeasant Day **Khongjom Day (Manipur, India) **National Sovereignty and Children's Day (Turkey and Northern Cyprus) **Navy Day (China) **St George's Day (England) and its related observances: ***Canada Book Day (Canada) ***St George's Day#Catalonia, La Diada de Sant Jordi (Catalonia, Spain) ***World Book Day **UN English Language Day (

) *April 24 **Armenian Genocide Remembrance Day (Armenia) **Concord Day (Niger) **Children's Day (Zambia) **Democracy Day (Nepal) **Fashion Revolution Day **Flag Day (Ireland) **International Sculpture Day **Kapyong Day (Australia) **Labour Day#Bangladesh, Labour Safety Day (Bangladesh) **National Panchayati Raj Day (India) **List of food days#April, National Pigs in a Blanket Day (United States) **Republic Day (The Gambia) **St Mark's Eve (Western Christianity) **World Day for Laboratory Animals *April 25 **Anniversary of the First Cabinet of Kurdish Government (

) **Anzac Day (Australia, New Zealand) **Arbor Day (Germany) **DNA Day **Feast of Saint Mark (Western Christianity) **Flag Day (Faroe Islands) **Public holidays in Eswatini, Flag Day (Eswatini) **Freedom Day (Portugal) **Liberation Day (Italy) **Rogation Day, Major Rogation (Western Christianity) **Military Foundation Day (North Korea) **List of food days#April, National Zucchini Bread Day (United States) **Parental Alienation Awareness Day **Red Hat Society Day **Sinai Liberation Day (Egypt) **World Malaria Day *April 26 **Chernobyl disaster related observances: ***International Duties Memorial Day, Memorial Day of Radiation Accidents and Catastrophes (Russia) ***Day of Remembrance of the Chernobyl tragedy (Belarus) **

(

, United States) **Hug A Friend Day **Thomas Roy#List of days, Hug an Australian Day **Lesbian Visibility Day **List of food days#April, National Pretzel Day (United States) **Old Permic alphabet, Old Permic Alphabet Day **Union Day (Tanzania) **World Intellectual Property Day *April 27 **Public holidays in Russia, Day of Russian Parliamentarism (Russia) **Day of the Uprising Against the Occupying Forces (Slovenia) ** Flag Day (Moldova) **Freedom Day (South Africa) ***UnFreedom Day **Independence Day (Sierra Leone) **Public holidays in Togo, Independence Day (Togo) **National Day (Mayotte) **National Day (Sierra Leone) **List of food days#April, National Prime Rib Day (United States) **Flag flying days in Finland, National Veterans' Day (Finland) *April 28 **Lawyers' Day (Orissa, India) **Mujahideen Victory Day (Afghanistan) **National Day (Sardinia, Italy) **National Heroes Day (Barbados), National Heroes Day (Barbados) **Restoration of Sovereignty Day (Japan) **Workers' Memorial Day, Workers' Memorial Day and World Day for Safety and Health at Work (International observances, international) ***National Day of Mourning (Canada), National Day of Mourning (Canada) *April 29 **Day of Remembrance for all Victims of Chemical Warfare (

) **International Dance Day (UNESCO) **Public holidays in Denmark#Other special days, Princess Bedike's Birthday (Denmark) **List of food days#April, National Shrimp Scampi Day (United States) **Shōwa Day, traditionally the start of the Golden Week (Japan), Golden Week holiday period, which is April 29 and May 3–5. (Japan) *April 30 **Armed Forces Day (Georgia (country)) **Flag flying days in Sweden, Birthday of the King (Sweden) **Battle of Camarón, Camarón Day (French Foreign Legion) **

(Mexico) **Public holidays in Thailand, Consumer Protection Day (Thailand) **Honesty Day (United States) **International Jazz Day (UNESCO) **Martyrs' Day#Pakistan, Martyr's Day (Pakistan) **May Eve, the eve of the first day of summer in the Northern hemisphere ''(see May 1)'': ***Beltane begins at sunset in the Northern hemisphere, Samhain begins at sunset in the Southern hemisphere. (Neo-Druidism, Neo-Druidic Wheel of the Year) ***Carodejnice (Czech Republic and Slovakia) ***Walpurgis Night (Central and Northern Europe) **Persian Gulf naming dispute#National Persian Gulf Day, National Persian Gulf Day (Iran) **Reunification Day (Vietnam) **Public holidays in Russia#Popular holidays which are not public holidays, Russian State Fire Service Day (Russia) **Tax return (Canada), Tax Day (Canada) **Teachers' Day (Paraguay)

References

External links

National Arbor Day Foundation
{{Authority control April, Months, *04

History

April symbols

April observances

Month-long observances

United States

United States Food months

Non-Gregorian observances: 2021

Movable observances, 2021 dates

First Wednesday: April 1

First Saturday: April 4

First Sunday: April 5

First full week: April 5–11

= Second Wednesday: April 8

= Second Thursday: April 9

= Second Friday of April: April 10

Second Sunday: April 12

Week of April 14: April 12–18

Third Wednesday: April 15

Third Thursday: April 16

Third Saturday: April 18

Last full week of April: April 19–25

Week of April 23: April 19–25

Week of the New Moon In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude. At this phase, the lunar disk is not visible to the naked eye, except when it is silhouetted against the Sun during a solar eclipse. ...: April 19–25

Third Monday: April 20

= Wednesday of last full week of April: April 22

First Thursday after April 18: April 23

= Fourth Thursday: April 23

= Last Friday: April 24

Last Friday in April to first Sunday in May: April 24-May 3

= Last Saturday: April 25

= Last Sunday: April 26

= April 27 (moves to April 26 if April 27 is on a Sunday): April 27

= Last Monday: April 27

= Last Wednesday: April 29

Fixed observances

See also

References

External links

Week of the
New Moon In astronomy, the new moon is the first lunar phase, when the Moon and Sun have the same ecliptic longitude. At this phase, the lunar disk is not visible to the naked eye, except when it is silhouetted against the Sun during a solar eclipse. ...
: April 19–25