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May 1994 lunar eclipse
Partial eclipse
	The Moon's hourly motion shown right to left
Date	May 25, 1994
Gamma	0.8933
Magnitude	0.2432
Saros cycle	140 (24 of 80)
Partiality	104 minutes, 36 seconds
Penumbral	261 minutes, 12 seconds
P1
Contacts (UTC)
P1	1:19:43
U1	2:37:59
Greatest	3:30:20
U4	4:22:36
P4	5:40:55
	← November 1993 November 1994 →

A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Wednesday, May 25, 1994,^[1] with an umbral magnitude of 0.2432. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 23.5 hours after perigee (on May 24, 1994, at 3:55 UTC), the Moon's apparent diameter was larger.^[2]

Visibility

The eclipse was completely visible over eastern North America, South America, west Africa, and Antarctica, seen rising over western North America and the eastern Pacific Ocean and setting over much of Africa, Europe, and the Middle East.^[3]

Eclipse details

Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.^[4]

May 25, 1994 Lunar Eclipse Parameters
Parameter	Value
Penumbral Magnitude	1.19408
Umbral Magnitude	0.24318
Gamma	0.89334
Sun Right Ascension	04h06m48.5s
Sun Declination	+20°53'35.0"
Sun Semi-Diameter	15'47.5"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	16h07m09.9s
Moon Declination	-19°59'22.3"
Moon Semi-Diameter	16'36.4"
Moon Equatorial Horizontal Parallax	1°00'56.9"
ΔT	60.3 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 May 1994
May 10 Descending node (new moon)	May 25 Ascending node (full moon)

Annular solar eclipse Solar Saros 128	Partial lunar eclipse Lunar Saros 140

Related eclipses

Lunar eclipses of 1991–1994

This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.^[5]

The penumbral lunar eclipses on January 30, 1991 and July 26, 1991 occur in the previous lunar year eclipse set.

Lunar eclipse series sets from 1991 to 1994
Ascending node				Descending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
110	1991 Jun 27	Penumbral	−1.4064	115	1991 Dec 21	Partial	0.9709
120	1992 Jun 15	Partial	−0.6289	125	1992 Dec 09	Total	0.3144
130	1993 Jun 04	Total	0.1638	135	1993 Nov 29	Total	−0.3994
140	1994 May 25	Partial	0.8933	145	1994 Nov 18	Penumbral	−1.1048

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[6] This lunar eclipse is related to two solar eclipses of Solar Saros 147.