Solar Eclipse Of July 20, 1925
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An annular
solar eclipse A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Such an alignment occurs approximately every six months, during the eclipse season i ...
occurred at the Moon's
ascending node An orbital node is either of the two points where an orbit intersects a plane of reference to which it is inclined. A non-inclined orbit, which is contained in the reference plane, has no nodes. Planes of reference Common planes of referenc ...
of orbit between Monday, July 20 and Tuesday, July 21, 1925, with a
magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...
of 0.9436. A
solar eclipse A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Such an alignment occurs approximately every six months, during the eclipse season i ...
occurs when the
Moon The Moon is Earth's only natural satellite. It Orbit of the Moon, orbits around Earth at Lunar distance, an average distance of (; about 30 times Earth diameter, Earth's diameter). The Moon rotation, rotates, with a rotation period (lunar ...
passes between
Earth Earth is the third planet from the Sun and the only astronomical object known to Planetary habitability, harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all ...
and the
Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a ...
, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's
apparent diameter The angular diameter, angular size, apparent diameter, or apparent size is an angular separation (in units of angle) describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the '' visual ...
is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 8 hours after
apogee An apsis (; ) is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides (also called apse line, or major axis of the orbit) is the line connecting the two extreme values. Apsides perta ...
(on July 20, 1925, at 13:30 UTC), the Moon's apparent diameter was smaller. Annularity was visible from northern part of
Northland Region Northland (), officially the Northland Region, is the northernmost of New Zealand's 16 regions of New Zealand, local government regions. New Zealanders sometimes refer to it as the Winterless North because of its mild climate all throughout t ...
and the whole
Kermadec Islands The Kermadec Islands ( ; ) are a subtropical island arc in the South Pacific Ocean northeast of New Zealand's North Island, and a similar distance southwest of Tonga. The islands are part of New Zealand. They are in total area and uninhabit ...
in
New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
on July 21 (Tuesday), and
Rapa Iti Rapa, also called Rapa Iti, or "Little Rapa", to distinguish it from Easter Island, whose Polynesian name is Rapa Nui, is the largest and only inhabited island of the Bass Islands in French Polynesia. An older name for the island is Oparo. Th ...
in
French Polynesia French Polynesia ( ; ; ) is an overseas collectivity of France and its sole #Governance, overseas country. It comprises 121 geographically dispersed islands and atolls stretching over more than in the Pacific Ocean, South Pacific Ocean. The t ...
on July 20 (Monday). A partial eclipse was visible for parts of
Eastern Australia The eastern states of Australia are the states adjoining the east continental coastline of Australia. These are the mainland states of Victoria, New South Wales and Queensland, and the island state of Tasmania. The Australian Capital Territor ...
and
Oceania Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its co ...
.


Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.


Eclipse season

This eclipse is part of an
eclipse season An eclipse season is a period, roughly every six months, when eclipses occur. Eclipse seasons are the result of the axial parallelism of the Orbit of the Moon, Moon's orbital plane (orbital inclination, tilted five degrees to the ecliptic, Earth ...
, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a
fortnight A fortnight is a unit of time equal to 14 days (two weeks). The word derives from the Old English term , meaning "" (or "fourteen days", since the Anglo-Saxons counted by nights). Astronomy and tides In astronomy, a ''lunar fortnight'' is hal ...
.


Related eclipses


Eclipses in 1925

* A total solar eclipse on January 24. * A partial lunar eclipse on February 8. * An annular solar eclipse on July 20. * A partial lunar eclipse on August 4.


Metonic

* Preceded by:
Solar eclipse of October 1, 1921 A total solar eclipse occurred at the Moon's ascending node of orbit on Saturday, October 1, 1921, with a magnitude of 1.0293. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of ...
* Followed by: Solar eclipse of May 9, 1929


Tzolkinex

* Preceded by:
Solar eclipse of June 8, 1918 A total solar eclipse occurred at the Moon's Lunar node, descending node of orbit between Saturday, June 8 and Sunday, June 9, 1918, with a Magnitude of eclipse, magnitude of 1.0292. A solar eclipse occurs when the Moon passes between Earth and th ...
* Followed by:
Solar eclipse of August 31, 1932 A total solar eclipse occurred at the Moon's descending node of orbit between Wednesday, August 31 and Thursday, September 1, 1932, with a magnitude of 1.0257. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby tota ...


Half-Saros

* Preceded by: Lunar eclipse of July 15, 1916 * Followed by: Lunar eclipse of July 26, 1934


Tritos

* Preceded by:
Solar eclipse of August 21, 1914 A total solar eclipse occurred at the Moon's descending node of orbit on Friday, August 21, 1914, with a magnitude of 1.0328. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of t ...
* Followed by:
Solar eclipse of June 19, 1936 file:1936 uludag.jpg, left, Astronomers in Turkey observing the 1936 eclipse A total solar eclipse occurred at the Moon's Lunar node, descending node of orbit on Friday, June 19, 1936, with a Magnitude of eclipse, magnitude of 1.0329. A solar ecl ...


Solar Saros 125

* Preceded by: Solar eclipse of July 10, 1907 * Followed by:
Solar eclipse of August 1, 1943 An annular solar eclipse occurred at the Moon's ascending node of orbit on Sunday, August 1, 1943, with a magnitude of 0.9409. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of ...


Inex

* Preceded by:
Solar eclipse of August 9, 1896 A total solar eclipse occurred at the Moon's Lunar node, descending node of orbit on Sunday, August 9, 1896, with a Magnitude of eclipse, magnitude of 1.0392. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally o ...
* Followed by:
Solar eclipse of June 30, 1954 A total solar eclipse occurred at the Moon's descending node of orbit on Wednesday, June 30, 1954, with a magnitude of 1.0357. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of ...


Triad

* Preceded by:
Solar eclipse of September 18, 1838 Solar may refer to: Astronomy * Of or relating to the Sun ** Solar telescope, a special purpose telescope used to observe the Sun ** A device that utilizes solar energy (e.g. "solar panels") ** Solar calendar, a calendar whose dates indicate t ...
* Followed by: Solar eclipse of May 20, 2012


Solar eclipses of 1924–1928


Saros 125


Metonic series


Tritos series


Inex series


Notes


References

{{Solar eclipses 1925 7 20 1925 7 20 1925 in science July 1925