- Source: May 1937 lunar eclipse
A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Tuesday, May 25, 1937, with an umbral magnitude of −0.3033. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. Occurring only about 18 hours after apogee (on May 24, 1937, at 13:30 UTC), the Moon's apparent diameter was smaller.
Visibility
The eclipse was completely visible over much of North America, western and central South America, and Antarctica, seen rising over Australia and setting over northeastern North America, eastern South America, and west Africa.
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
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.
Related eclipses
= Eclipses in 1937
=A penumbral lunar eclipse on May 25.
A total solar eclipse on June 8.
A partial lunar eclipse on November 18.
An annular solar eclipse on December 2.
= Metonic
=Preceded by: Lunar eclipse of August 5, 1933
Followed by: Lunar eclipse of March 13, 1941
= Tzolkinex
=Preceded by: Lunar eclipse of April 13, 1930
Followed by: Lunar eclipse of July 6, 1944
= Half-Saros
=Preceded by: Solar eclipse of May 19, 1928
Followed by: Solar eclipse of May 30, 1946
= Tritos
=Preceded by: Lunar eclipse of June 25, 1926
Followed by: Lunar eclipse of April 23, 1948
= Lunar Saros 110
=Preceded by: Lunar eclipse of May 15, 1919
Followed by: Lunar eclipse of June 5, 1955
= Inex
=Preceded by: Lunar eclipse of June 14, 1908
Followed by: Lunar eclipse of May 4, 1966
= Triad
=Preceded by: Lunar eclipse of July 24, 1850
Followed by: Lunar eclipse of March 25, 2024
= Lunar eclipses of 1937–1940
== Half-Saros cycle
=A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to one total and one partial = two solar eclipses of Solar Saros 117.
See also
List of lunar eclipses
List of 20th-century lunar eclipses
Notes
External links
1937 May 25 chart Eclipse Predictions by Fred Espenak, NASA/GSFC