A partial

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 Friday, April 17 and Saturday, April 18, 1931, 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 0.5107. A

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. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. A partial eclipse was visible for parts of

East Asia East Asia is a geocultural region of Asia. It includes China, Japan, Mongolia, North Korea, South Korea, and Taiwan, plus two special administrative regions of China, Hong Kong and Macau. The economies of Economy of China, China, Economy of Ja ...

and

North Asia North Asia or Northern Asia () is the northern region of Asia, which is defined in geography, geographical terms and consists of three federal districts of Russia: Ural Federal District, Ural, Siberian Federal District, Siberian, and the Far E ...

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 1931

* A total lunar eclipse on April 2. * A partial solar eclipse on April 18. * A partial solar eclipse on September 12. * A total lunar eclipse on September 26. * A partial solar eclipse on October 11.

Metonic

* Preceded by:

Solar eclipse of June 29, 1927 A total solar eclipse occurred at the Moon's Lunar node, ascending node of orbit between Tuesday, June 28 and Wednesday, June 29, 1927, with a Magnitude of eclipse, magnitude of 1.0128. A solar eclipse occurs when the Moon passes between Earth and ...

* Followed by:

Solar eclipse of February 3, 1935 A partial solar eclipse occurred at the Moon's ascending node of orbit on Sunday, February 3, 1935, with a magnitude of 0.739. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of ...

Tzolkinex

* Preceded by: Solar eclipse of March 5, 1924 * Followed by: Solar eclipse of May 29, 1938

Half-Saros

* Preceded by: Lunar eclipse of April 11, 1922 * Followed by: Lunar eclipse of April 22, 1940

Tritos

* Preceded by:

Solar eclipse of May 18, 1920 A partial solar eclipse occurred at the Moon's descending node of orbit on Tuesday, May 18, 1920, with a magnitude of 0.9734. 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 March 16, 1942

Solar Saros 147

* Preceded by:

Solar eclipse of April 6, 1913 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 April 28, 1949

Inex

* Preceded by: Solar eclipse of May 7, 1902 * Followed by: Solar eclipse of March 27, 1960

Triad

* Preceded by: Solar eclipse of June 16, 1844 * Followed by: Solar eclipse of February 15, 2018

Solar eclipses of 1928–1931

Saros 147

Metonic series

Tritos series

Inex series

Notes

References

External links

{{Solar eclipses 1931 4 18 1931 in science 1931 4 18 April 1931