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June 1964 lunar eclipse
Total eclipse
	The Moon's hourly motion shown right to left
Date	June 25, 1964
Gamma	−0.1461
Magnitude	1.5565
Saros cycle	129 (35 of 71)
Totality	100 minutes, 47 seconds
Partiality	233 minutes, 14 seconds
Penumbral	372 minutes, 5 seconds
P1
Contacts (UTC)
P1	22:00:11
U1	23:09:37
U2	0:15:51
Greatest	1:06:14
U3	1:56:38
U4	3:02:52
P4	4:12:16
	← December 1963 December 1964 →

A total lunar eclipse occurred at the Moon’s descending node of orbit on Thursday, June 25, 1964,^[1] with an umbral magnitude of 1.5565. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 1.5 days after apogee (on June 23, 1964, at 12:30 UTC), the Moon's apparent diameter was smaller.^[2]

The Moon passed through the center of the Earth's shadow.

Visibility

The eclipse was completely visible over much of South America, western Europe, and west, central, and southern Africa, seen rising over much of North America and northwestern South America and setting over much of Europe, northeast Africa, the western half of Asia, and western Australia.^[3]

Eclipse details

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

June 25, 1964 Lunar Eclipse Parameters
Parameter	Value
Penumbral Magnitude	2.62384
Umbral Magnitude	1.55649
Gamma	−0.14611
Sun Right Ascension	06h15m16.1s
Sun Declination	+23°23'50.0"
Sun Semi-Diameter	15'44.1"
Sun Equatorial Horizontal Parallax	08.7"
Moon Right Ascension	18h15m13.5s
Moon Declination	-23°31'42.9"
Moon Semi-Diameter	14'44.5"
Moon Equatorial Horizontal Parallax	0°54'06.1"
ΔT	35.4 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of June–July 1964
June 10 Ascending node (new moon)	June 25 Descending node (full moon)	July 9 Ascending node (new moon)

Partial solar eclipse Solar Saros 117	Total lunar eclipse Lunar Saros 129	Partial solar eclipse Solar Saros 155

Related eclipses

Eclipses in 1964

Lunar eclipses of 1962–1965

Lunar eclipse series sets from 1962–1965
Descending node				Ascending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
109	1962 Jul 17	Penumbral	1.33712	114	1963 Jan 09	Penumbral	-1.01282
119	1963 Jul 06	Partial	0.61972	124	1963 Dec 30	Total	-0.28889
129	1964 Jun 25	Total	-0.14611	134	1964 Dec 19	Total	0.38008
139	1965 Jun 14	Partial	-0.90055	144	1965 Dec 08	Penumbral	1.07748

Last set	1962 Aug 15			Last set	1962 Feb 19

Next set	1966 May 04			Next set	1966 Oct 29

Saros 129

Lunar saros series 129, repeating every 18 years and 11 days, containing 71 events, has 11 total lunar eclipses. The first total lunar eclipse of this series was on May 24, 1910, and last will be on September 8, 2090. The longest occurrence of this series was on July 16, 2000 when totality lasted 106 minutes and 24.6 seconds.

Greatest	First
The greatest eclipse of the series occurred on 2000 Jul 16, lasting 106 minutes.	Penumbral	Partial	Total	Central
	1351 Jun 10	1513 Sep 15	1910 May 24	1946 Jun 14
	Last
	Central	Total	Partial	Penumbral
	2036 Aug 7	2090 Sep 8	2469 Apr 26	2613 Jul 24

It last occurred on June 14, 1946 and will next occur on July 6, 1982.

This is the 35th member of Lunar Saros 129. The previous event was the June 1946 lunar eclipse. The next event is the July 1982 lunar eclipse. Lunar Saros 129 contains 11 total lunar eclipses between 1910 and 2090. Solar Saros 136 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).^[5] This lunar eclipse is related to two total solar eclipses of Solar Saros 136.