Holy day refers to a religious commemorative day or festival: * Liturgical year, determines when feast days, including celebrations of saints, are to be observed *

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 ...

* List of movable Western Christian observances *

Holy day of obligation In the Catholic Church, holy days of obligation are days on which the faithful are expected to attend Mass, and engage in rest from work and recreation (id est, they are to refrain from engaging in work or activities that hinder the worship owed t ...

, in Catholicism, days on which the faithful are expected to attend Mass *

Festival (Anglicanism) A Festival is a type of observance in the Churches of the Anglican Communion, considered to be less significant than a Principal Feast or Principal Holy Day, but more significant than a Lesser Festival or Commemoration. In '' Common Worship,'' each ...

, a type of observance in the Churches of the Anglican Communion *

List of Hindu festivals Across the globe, Hindus celebrate a diverse number of festivals and celebrations, typically marking events from ancient India and often coinciding with seasonal changes. These celebrations take place either on a fixed annual date on the solar ...

Buddhist holidays This is a list of holidays celebrated within the Buddhist tradition. List *Vesak: The Buddha's birthday is known as Vesak and is one of the major festivals of the year. It is celebrated on the first full moon day in May, or the fourth lunar mon ...

Islamic holidays There are two official holidays in Islam, Eid al-Fitr and Eid al-Adha, which are celebrated by Muslims worldwide. Both holidays occur on dates in the lunar Islamic calendar, which is different from the solar-based Gregorian calendar, so they are ...

Jewish holidays Jewish holidays, also known as Jewish festivals or ''Yamim Tovim'' ( he, ימים טובים, , Good Days, or singular , in transliterated Hebrew []), are holidays observed in Judaism and by JewsThis article focuses on practices of mainstre ...

* Heathen holidays, in Neopaganism * Zoroastrian festivals

See also