September 2025 lunar eclipse

September 2025 lunar eclipse
Total eclipse
The Moon's hourly motion shown right to left
DateSeptember 7, 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 Sunday, September 7, 2025,[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 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

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

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

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

Eclipses in 2025

Metonic

Tzolkinex

Half-Saros

Tritos

Lunar Saros 128

Inex

Triad

Lunar eclipses of 2024–2027

Lunar eclipse series sets from 2024–2027
Descending node   Ascending node
Saros Date Type
Viewing 		Gamma Saros Date
Viewing 		Type
Chart 		Gamma
113
 2024 Mar 25
 Penumbral
 1.06098 118
 2024 Sep 18
 Partial
 −0.97920
123 2025 Mar 14
 Total
 0.34846 128 2025 Sep 07
 Total
 −0.27521
133 2026 Mar 03
 Total
 −0.37651 138 2026 Aug 28
 Partial
 0.49644
143 2027 Feb 20
 Penumbral
 −1.04803 148 2027 Aug 17
 Penumbral
 1.27974
Last set 2023 May 05 Last set 2023 Oct 28
Next set 2028 Jan 12 Next set 2027 Jul 18

Saros 128

Lunar saros series 128, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 57 umbral eclipses (42 partial lunar eclipses and 15 total lunar eclipses). Solar Saros 135 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Greatest First

The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100.7 minutes.[5] 		Penumbral Partial Total Central
1304 Jun 18 1430 Sep 2 1845 May 21 1899 Jun 23
Last
Central Total Partial Penumbral
2007 Aug 28 2097 May 21 2440 May 17 2566 Aug 2
1901–2100
1917 Jul 4 1935 Jul 16 1953 Jul 26
1971 Aug 6 1989 Aug 17 2007 Aug 28
2025 Sep 7 2043 Sep 19 2061 Sep 29
2079 Oct 10 2097 Oct 21

Lunar Saros 128 contains 15 total lunar eclipses between 1845 and 2097 (in years 1845, 1863, 1881, 1899, 1917, 1935, 1953, 1971, 1989, 2007, 2025, 2043, 2061, 2079 and 2097). Solar Saros 135 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Metonic series

This eclipse is the second of four Metonic cycle lunar eclipses on the same date, September 7, each separated by 19 years:

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)

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 annular solar eclipses of Solar Saros 135.

September 1, 2016 September 12, 2034

See also

Notes

  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. ^ Listing of Eclipses of cycle 128
  6. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros