An annular solar eclipse occurred at the Moon's ascending node of orbit between Monday, July 20 and Tuesday, July 21, 1925, with a magnitude of 0.9436. 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. Occurring about 8 hours after apogee (on July 20, 1925, at 13:30 UTC), the Moon's apparent diameter was smaller.

Annularity was visible from northern part of Northland Region and the whole Kermadec Islands in New Zealand on July 21 (Tuesday), and Rapa Iti in French Polynesia on July 20 (Monday). A partial eclipse was visible for parts of Eastern Australia and Oceania.

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.

+July 20, 1925 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1925 July 20 at 19:03:41.7 UTC First Umbral External Contact 1925 July 20 at 20:23:08.9 UTC First Central Line 1925 July 20 at 20:26:27.5 UTC First Umbral Internal Contact 1925 July 20 at 20:29:50.5 UTC Ecliptic Conjunction 1925 July 20 at 21:40:09.2 UTC Greatest Duration 1925 July 20 at 21:46:03.5 UTC Greatest Eclipse 1925 July 20 at 21:48:41.6 UTC Equatorial Conjunction 1925 July 20 at 21:57:08.7 UTC Last Umbral Internal Contact 1925 July 20 at 23:07:26.9 UTC Last Central Line 1925 July 20 at 23:10:49.8 UTC Last Umbral External Contact 1925 July 20 at 23:14:08.3 UTC Last Penumbral External Contact 1925 July 21 at 00:33:37.3 UTC

+July 20, 1925 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.94358 Eclipse Obscuration 0.89035 Gamma −0.71927 Sun Right Ascension 07h58m46.0s Sun Declination +20°38'42.8" Sun Semi-Diameter 15'44.4" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 07h58m29.8s Moon Declination +20°00'11.9" Moon Semi-Diameter 14'42.0" Moon Equatorial Horizontal Parallax 0°53'57.1" ΔT 23.7 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 July–August 1925 July 20Ascending node (new moon) August 4Descending node (full moon) Annular solar eclipseSolar Saros 125 Partial lunar eclipseLunar Saros 137

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 Followed by: Solar eclipse of May 9, 1929

Tzolkinex Preceded by: Solar eclipse of June 8, 1918 Followed by: Solar eclipse of August 31, 1932

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 Followed by: Solar eclipse of June 19, 1936

Solar Saros 125 Preceded by: Solar eclipse of July 10, 1907 Followed by: Solar eclipse of August 1, 1943

Inex Preceded by: Solar eclipse of August 9, 1896 Followed by: Solar eclipse of June 30, 1954

Triad Preceded by: Solar eclipse of September 18, 1838 Followed by: Solar eclipse of May 20, 2012

Solar eclipses of 1924–1928

Saros 125

Metonic series

Tritos series

Inex series

Notes

References