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September 2025 lunar eclipse

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September 2025 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateSeptember 7-8, 2025
Gamma−0.2752
Magnitude1.3638
Saros cycle128 (41 of 71)
Totality82 minutes, 6 seconds
Partiality209 minutes, 24 seconds
Penumbral326 minutes, 40 seconds
Contacts (UTC)
P115:28:21
U116:27:02
U217:30:41
Greatest18:11:43
U318:52:47
U419:56:26
P420:55:00

A total lunar eclipse will occur at the Moon’s ascending node of orbit on Monday, September 8, 2025 (September 7 for some areas), [1] with an umbral magnitude of 1.3638. 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 2.6 days after perigee (on Wednesday, September 10, 2025, at 8:10 UTC), the Moon's apparent diameter will be larger.[2]

This lunar eclipse will be the second of an almost tetrad, with the others being on March 14, 2025 (total); March 3, 2026 (total); and August 28, 2026 (partial).

Visibility

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The eclipse will be completely visible over east Africa, Asia, and Australia, seen rising over most of Africa and Europe and setting over the central Pacific Ocean.[3]


Visibility map

Eclipse details

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

September 7, 2025 Lunar Eclipse Parameters
Parameter Value
Penumbral Magnitude 2.34591
Umbral Magnitude 1.36379
Gamma −0.27521
Sun Right Ascension 11h06m09.1s
Sun Declination +05°45'47.6"
Sun Semi-Diameter 15'52.4"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 23h06m40.4s
Moon Declination -06°00'08.9"
Moon Semi-Diameter 16'09.8"
Moon Equatorial Horizontal Parallax 0°59'19.1"
ΔT 71.9 s

Eclipse season

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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.

Eclipse season of September 2025
September 7
Ascending node (full moon)
 September 21
Descending node (new moon)
Total lunar eclipse
Lunar Saros 128		 Partial solar eclipse
Solar Saros 154
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Eclipses in 2025

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Lunar Saros 128

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Inex

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Triad

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Lunar eclipses of 2024–2027

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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 eclipse on July 18, 2027 occurs in the next lunar year eclipse set.

Lunar eclipse series sets from 2024 to 2027
Descending node   Ascending node
Saros Date
Viewing 		Type
Chart 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
113
 2024 Mar 25
 Penumbral
 1.0610 118
 2024 Sep 18
 Partial
 −0.9792
123 2025 Mar 14
 Total
 0.3485 128 2025 Sep 07
 Total
 −0.2752
133 2026 Mar 03
 Total
 −0.3765 138 2026 Aug 28
 Partial
 0.4964
143 2027 Feb 20
 Penumbral
 −1.0480 148 2027 Aug 17
 Penumbral
 1.2797

Metonic series

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The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.

  1. 2006 Mar 14.99 - penumbral (113)
  2. 2025 Mar 14.29 - total (123)
  3. 2044 Mar 13.82 - total (133)
  4. 2063 Mar 14.67- partial (143)
  1. 2006 Sep 07.79 - partial (118)
  2. 2025 Sep 07.76 - total (128)
  3. 2044 Sep 07.47 - partial (138)
  4. 2063 Sep 07.86 - penumbral (148)

Saros 128

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This eclipse is a part of Saros series 128, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 18, 1304. It contains partial eclipses from September 2, 1430 through May 11, 1827; total eclipses from May 21, 1845 through October 21, 2097; and a second set of partial eclipses from November 2, 2115 through May 17, 2440. The series ends at member 71 as a penumbral eclipse on August 2, 2566.

The longest duration of totality was produced by member 37 at 100 minutes, 43 seconds on July 26, 1953. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Greatest First

The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds.[7] 		Penumbral Partial Total Central
1304 Jun 18
 1430 Sep 02
 1845 May 21
 1899 Jun 23
Last
Central Total Partial Penumbral
2007 Aug 28
 2097 Oct 21
 2440 May 17
 2566 Aug 02

Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

Tritos series

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This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Series members between 1801 and 2200
1807 May 21
(Saros 108) 		1818 Apr 21
(Saros 109) 		1829 Mar 20
(Saros 110) 		1840 Feb 17
(Saros 111) 		1851 Jan 17
(Saros 112)
1861 Dec 17
(Saros 113) 		1872 Nov 15
(Saros 114) 		1883 Oct 16
(Saros 115) 		1894 Sep 15
(Saros 116) 		1905 Aug 15
(Saros 117)
1916 Jul 15
(Saros 118) 		1927 Jun 15
(Saros 119) 		1938 May 14
(Saros 120) 		1949 Apr 13
(Saros 121) 		1960 Mar 13
(Saros 122)
1971 Feb 10
(Saros 123) 		1982 Jan 09
(Saros 124) 		1992 Dec 09
(Saros 125) 		2003 Nov 09
(Saros 126) 		2014 Oct 08
(Saros 127)
2025 Sep 07
(Saros 128) 		2036 Aug 07
(Saros 129) 		2047 Jul 07
(Saros 130) 		2058 Jun 06
(Saros 131) 		2069 May 06
(Saros 132)
2080 Apr 04
(Saros 133) 		2091 Mar 05
(Saros 134) 		2102 Feb 03
(Saros 135) 		2113 Jan 02
(Saros 136) 		2123 Dec 03
(Saros 137)
2134 Nov 02
(Saros 138) 		2145 Sep 30
(Saros 139) 		2156 Aug 30
(Saros 140) 		2167 Aug 01
(Saros 141) 		2178 Jun 30
(Saros 142)
2189 May 29
(Saros 143) 		2200 Apr 30
(Saros 144)

Half-Saros cycle

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A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[8] This lunar eclipse is related to two annular solar eclipses of Solar Saros 135.

September 1, 2016 September 12, 2034

See also

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Notes

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  1. ^ "September 7–8, 2025 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 18 November 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 18 November 2024.
  3. ^ "Total Lunar Eclipse of 2025 Sep 07" (PDF). NASA. Retrieved 18 November 2024.
  4. ^ "Total Lunar Eclipse of 2025 Sep 07". EclipseWise.com. Retrieved 18 November 2024.
  5. ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
  6. ^ "NASA - Catalog of Lunar Eclipses of Saros 128". eclipse.gsfc.nasa.gov.
  7. ^ Listing of Eclipses of series 128
  8. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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