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]
| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | September 7, 2025 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.2752 | ||||||||||||||||
| Magnitude | 1.3638 | ||||||||||||||||
| Saros cycle | 128 (41 of 71) | ||||||||||||||||
| Totality | 82 minutes, 6 seconds | ||||||||||||||||
| Partiality | 209 minutes, 24 seconds | ||||||||||||||||
| Penumbral | 326 minutes, 40 seconds | ||||||||||||||||
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This lunar eclipse will be the second of an almost tetrad[broken anchor], with the others being on March 14, 2025 (total); March 3, 2026 (total); and August 28, 2026 (partial).
Visibility
editThe 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
editShown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| 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
editThis 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.
| September 7 Ascending node (full moon) |
September 21 Descending node (new moon) |
|---|---|
| |
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| Total lunar eclipse Lunar Saros 128 |
Partial solar eclipse Solar Saros 154 |
Related eclipses
editEclipses in 2025
edit- A total lunar eclipse on March 14.
- A partial solar eclipse on March 29.
- A total lunar eclipse on September 7.
- A partial solar eclipse on September 21.
Metonic
edit- Preceded by: Lunar eclipse of November 19, 2021
- Followed by: Lunar eclipse of June 26, 2029
Tzolkinex
edit- Preceded by: Lunar eclipse of July 27, 2018
- Followed by: Lunar eclipse of October 18, 2032
Half-Saros
edit- Preceded by: Solar eclipse of September 1, 2016
- Followed by: Solar eclipse of September 12, 2034
Tritos
edit- Preceded by: Lunar eclipse of October 8, 2014
- Followed by: Lunar eclipse of August 7, 2036
Lunar Saros 128
edit- Preceded by: Lunar eclipse of August 28, 2007
- Followed by: Lunar eclipse of September 19, 2043
Inex
edit- Preceded by: Lunar eclipse of September 27, 1996
- Followed by: Lunar eclipse of August 18, 2054
Triad
edit- Preceded by: Lunar eclipse of November 7, 1938
- Followed by: Lunar eclipse of July 9, 2112
Lunar eclipses of 2024–2027
edit| 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
editLunar 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 | |
| 1917 Jul 4 | 1935 Jul 16 | 1953 Jul 26 | |||
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| 1971 Aug 6 | 1989 Aug 17 | 2007 Aug 28 | |||
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| 2025 Sep 7 | 2043 Sep 19 | 2061 Sep 29 | |||
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| 2079 Oct 10 | 2097 Oct 21 | ||||
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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
editThis 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.
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|
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Half-Saros cycle
editA 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 |
|---|---|
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See also
editNotes
edit- ^ "September 7–8, 2025 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 18 November 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 18 November 2024.
- ^ "Total Lunar Eclipse of 2025 Sep 07" (PDF). NASA. Retrieved 18 November 2024.
- ^ "Total Lunar Eclipse of 2025 Sep 07". EclipseWise.com. Retrieved 18 November 2024.
- ^ Listing of Eclipses of cycle 128
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- Saros cycle 128
- 2025 Sep 07 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
