A partial solar eclipse occurred at the Moon's ascending node of orbit between Friday, April 17 and Saturday, April 18, 1931, with a magnitude of 0.5107. A solar eclipse occurs when the Moon passes between Earth and the Sun, 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 and North Asia.
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.
+April 18, 1931 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1931 April 17 at 22:57:48.0 UTC Greatest Eclipse 1931 April 18 at 00:45:34.6 UTC Ecliptic Conjunction 1931 April 18 at 00:59:58.6 UTC Equatorial Conjunction 1931 April 18 at 01:59:51.2 UTC Last Penumbral External Contact 1931 April 18 at 02:32:47.7 UTC
+April 18, 1931 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.51068 Eclipse Obscuration 0.39455 Gamma 1.26430 Sun Right Ascension 01h40m20.1s Sun Declination +10°25'14.0" Sun Semi-Diameter 15'55.6" Sun Equatorial Horizontal Parallax 08.8" Moon Right Ascension 01h38m13.6s Moon Declination +11°26'51.3" Moon Semi-Diameter 14'54.6" Moon Equatorial Horizontal Parallax 0°54'43.2" ΔT 24.0 s
Eclipse season
This eclipse is part of an eclipse season, 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.
+ Eclipse season of April 1931 April 2Descending node (full moon) April 18Ascending node (new moon) Total lunar eclipseLunar Saros 121 Partial solar eclipseSolar Saros 147
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 Followed by: Solar eclipse of February 3, 1935
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 Followed by: Solar eclipse of March 16, 1942
Solar Saros 147 Preceded by: Solar eclipse of April 6, 1913 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