An annular solar eclipse occurred at the Moon's descending node of orbit on Friday, April 8, 1921, with a magnitude of 0.9753. 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. An annular solar eclipse occurs when the Moon's apparent diameter 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. The Moon's apparent diameter was near the average diameter because it occurred 6.5 days after apogee (on April 1, 1921, at 20:50 UTC) and 8.3 days before perigee (on April 16, 1921, at 16:10 UTC).
Annularity was visible from northern Scotland, northwestern tip of Norway, and islands in the Arctic Ocean in Russian SFSR. A partial eclipse was visible for parts of North Africa, Europe, Central Asia, and the Russian SFSR.
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 8, 1921 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1921 April 8 at 06:51:44.6 UTC First Umbral External Contact 1921 April 8 at 08:21:25.5 UTC First Central Line 1921 April 8 at 08:23:38.1 UTC Greatest Duration 1921 April 8 at 08:23:38.1 UTC First Umbral Internal Contact 1921 April 8 at 08:25:55.2 UTC Ecliptic Conjunction 1921 April 8 at 09:05:08.6 UTC Greatest Eclipse 1921 April 8 at 09:15:01.3 UTC Equatorial Conjunction 1921 April 8 at 09:44:56.4 UTC Last Umbral Internal Contact 1921 April 8 at 10:03:48.2 UTC Last Central Line 1921 April 8 at 10:06:02.5 UTC Last Umbral External Contact 1921 April 8 at 10:08:12.1 UTC Last Penumbral External Contact 1921 April 8 at 11:37:57.8 UTC
+April 8, 1921 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.97530 Eclipse Obscuration 0.95120 Gamma 0.88692 Sun Right Ascension 01h06m22.7s Sun Declination +07°03'40.4" Sun Semi-Diameter 15'58.0" Sun Equatorial Horizontal Parallax 08.8" Moon Right Ascension 01h05m24.3s Moon Declination +07°51'45.1" Moon Semi-Diameter 15'28.0" Moon Equatorial Horizontal Parallax 0°56'45.6" ΔT 22.3 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 1921 April 8Descending node (new moon) April 22Ascending node (full moon) Annular solar eclipseSolar Saros 118 Total lunar eclipseLunar Saros 130
Related eclipses Eclipses in 1921 An annular solar eclipse on April 8. A total lunar eclipse on April 22. A total solar eclipse on October 1. A partial lunar eclipse on October 16.
Metonic Preceded by: Solar eclipse of June 19, 1917 Followed by: Solar eclipse of January 24, 1925
Tzolkinex Preceded by: Solar eclipse of February 25, 1914 Followed by: Solar eclipse of May 19, 1928
Half-Saros Preceded by: Lunar eclipse of April 1, 1912 Followed by: Lunar eclipse of April 13, 1930
Tritos Preceded by: Solar eclipse of May 9, 1910 Followed by: Solar eclipse of March 7, 1932
Solar Saros 118 Preceded by: Solar eclipse of March 29, 1903 Followed by: Solar eclipse of April 19, 1939
Inex Preceded by: Solar eclipse of April 26, 1892 Followed by: Solar eclipse of March 18, 1950
Triad Preceded by: Solar eclipse of June 7, 1834 Followed by: Solar eclipse of February 7, 2008
Solar eclipses of 1921–1924
Saros 118
Metonic series
Tritos series
Inex series
Notes
References