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{{Short description|Total lunar eclipse June 25, 1964}}
{{Infobox lunar eclipse
| type = total
| image = Lunar eclipse chart close-1964Jun25.png
| caption = The Moon's hourly motion shown right to left
| date = June 25, 1964
| gamma = −0.1461
| magnitude = 1.5565
| saros_ser = 129
| saros_no = 35 of 71
| totality = 100 minutes, 47 seconds
| partiality = 233 minutes, 14 seconds
| penumbral = 372 minutes, 5 seconds
| 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
| previous = December 1963
| next = December 1964
}}
A total [[lunar eclipse]] occurred at the Moon’s [[Lunar node|descending node]] of orbit on Thursday, June 25, 1964,<ref>{{cite web|title=June 24–25, 1964 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/1964-june-25|publisher=timeanddate|access-date=31 December 2024}}</ref> with an umbral [[Magnitude of eclipse|magnitude]] of 1.5565. It was a [[List of central lunar eclipses|central lunar eclipse]], in which part of the [[Moon]] passed through the [[antisolar point|center]] of the [[Earth's shadow]]. 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 [[Umbra, penumbra and antumbra|shadow]] is smaller. Occurring about 1.5 days after [[Apsis|apogee]] (on June 23, 1964, at 12:30 UTC), the Moon's apparent diameter was smaller.<ref>{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1964&n=136|publisher=timeanddate|access-date=31 December 2024}}</ref>

== Visibility ==
The eclipse was completely visible over much of [[South America]], [[western Europe]], and [[west Africa|west]], [[central Africa|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]].<ref>{{cite web|title=Total Lunar Eclipse of 1964 Jun 25|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1951/LE1964Jun25T.pdf|publisher=NASA|access-date=31 December 2024}}</ref>

{| class=wikitable
|[[File:Lunar eclipse from moon-1964Jun25.png|300px]] [[File:Lunar eclipse chart close-1964Jun25.png|300px]]
|}

== Eclipse details ==
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.<ref>{{cite web|title=Total Lunar Eclipse of 1964 Jun 25|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1964Jun25Tprime.html|publisher=EclipseWise.com|access-date=31 December 2024}}</ref>

{|class="wikitable" align="{{{align|left}}}" style="margin:{{#ifeq:{{{align}}}|right|0 0 0.5em 1em|0 1em 0.5em 0}}"
|+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
|}
{{clear}}

== Eclipse season ==
{{See also|Eclipse cycle}}
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 [[month#Synodic month|synodic month]].

{| class="wikitable"
|+ Eclipse season of June–July 1964
! [[Solar eclipse of June 10, 1964|June 10]] Ascending node (new moon) !! June 25 Descending node (full moon) !! [[Solar eclipse of July 9, 1964|July 9]] Ascending node (new moon) 
|-
| [[File:SE1964Jun10P.png|200px]] || [[File:Lunar eclipse chart close-1964Jun25.png|200px]] || [[File:SE1964Jul09P.png|200px]]
|- align=center
| [[Total eclipse#Types|Partial solar eclipse]] Solar Saros 117 || [[Lunar eclipse#Types of lunar eclipse|Total lunar eclipse]] Lunar Saros 129 || [[Total eclipse#Types|Partial solar eclipse]] Solar Saros 155
|}

== Related eclipses ==
=== Eclipses in 1964 ===
* [[Solar eclipse of January 14, 1964|A partial solar eclipse on January 14]].
* [[Solar eclipse of June 10, 1964|A partial solar eclipse on June 10]].
* '''A total lunar eclipse on June 25.'''
* [[Solar eclipse of July 9, 1964|A partial solar eclipse on July 9]].
* [[Solar eclipse of December 4, 1964|A partial solar eclipse on December 4]].
* [[December 1964 lunar eclipse|A total lunar eclipse on December 19]].

=== Metonic ===
* Preceded by: [[September 1960 lunar eclipse|Lunar eclipse of September 5, 1960]]
* Followed by: [[April 1968 lunar eclipse|Lunar eclipse of April 13, 1968]]

=== Tzolkinex ===
* Preceded by: [[May 1957 lunar eclipse|Lunar eclipse of May 13, 1957]]
* Followed by: [[August 1971 lunar eclipse|Lunar eclipse of August 6, 1971]]

=== Half-Saros ===
* Preceded by: [[Solar eclipse of June 20, 1955]]
* Followed by: [[Solar eclipse of June 30, 1973]]

=== Tritos ===
* Preceded by: [[July 1953 lunar eclipse|Lunar eclipse of July 26, 1953]]
* Followed by: [[May 1975 lunar eclipse|Lunar eclipse of May 25, 1975]]

=== Lunar Saros 129 ===
* Preceded by: [[June 1946 lunar eclipse|Lunar eclipse of June 14, 1946]]
* Followed by: [[July 1982 lunar eclipse|Lunar eclipse of July 6, 1982]]

=== Inex ===
* Preceded by: [[July 1935 lunar eclipse|Lunar eclipse of July 16, 1935]]
* Followed by: [[June 1993 lunar eclipse|Lunar eclipse of June 4, 1993]]

=== Triad ===
* Preceded by: [[August 1877 lunar eclipse|Lunar eclipse of August 23, 1877]]
* Followed by: [[April 2051 lunar eclipse|Lunar eclipse of April 26, 2051]]

=== Lunar eclipses of 1962–1965 ===
{{Lunar eclipse set 1962–1965}}

=== Saros 129 ===
{{Lunar Saros series 129}}

=== Tritos series ===
{{Lunar Tritos series February 2008}}

=== Inex series ===
{{Lunar Inex series May 2022}}

=== Half-Saros cycle ===
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a [[Saros (astronomy)#Relationship between lunar and solar saros .28sar.29|half saros]]).<ref>Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, ''The half-saros''</ref> This lunar eclipse is related to two total solar eclipses of [[Solar Saros 136]].
{| class=wikitable
![[Solar eclipse of June 20, 1955|June 20, 1955]]
![[Solar eclipse of June 30, 1973|June 30, 1973]]
|-
|[[File:SE1955Jun20T.png|240px]]
|[[File:SE1973Jun30T.png|240px]]
|}

==See also==
*[[List of lunar eclipses]]
*[[List of 20th-century lunar eclipses]]

==Notes==
{{reflist}}

==External links==
*{{LEplot1951 link|1964|Jun|25|T}}

{{Lunar eclipses}}

{{DEFAULTSORT:Lunar eclipse 1964-06}}
[[Category:20th-century lunar eclipses|1964-06]]
[[Category:Central total lunar eclipses|1964-06]]
[[Category:1964 in science]]
[[Category:June 1964]]

June 1964 lunar eclipse - Revision history

imported>BunnysBot: Fix CW Errors with GenFixes (T1), removed stub tag