# September 2025 lunar eclipse

A total lunar eclipse will occur at the Moon’s ascending node of orbit on Sunday, September 7, 2025, 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.
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. It can be seen when it is rising over most of Africa and Europe. It can be seen when it is setting over the central Pacific Ocean.
* Visibility map

## Eclipse details

Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.
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

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 |

## Related eclipses
### Eclipses in 2025

* 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

* Preceded by: Lunar eclipse of November 19, 2021
* Followed by: Lunar eclipse of June 26, 2029

### Tzolkinex

* Preceded by: Lunar eclipse of July 27, 2018
* Followed by: Lunar eclipse of October 18, 2032

### Half-Saros

* Preceded by: Solar eclipse of September 1, 2016
* Followed by: Solar eclipse of September 12, 2034

### Tritos

* Preceded by: Lunar eclipse of October 8, 2014
* Followed by: Lunar eclipse of August 7, 2036

### Lunar Saros 128

* Preceded by: Lunar eclipse of August 28, 2007
* Followed by: Lunar eclipse of September 19, 2043

### Inex

* Preceded by: Lunar eclipse of September 27, 1996
* Followed by: Lunar eclipse of August 18, 2054

### Triad

* Preceded by: Lunar eclipse of November 7, 1938
* Followed by: Lunar eclipse of July 9, 2112

### Lunar eclipses of 2024–2027

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.
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 | Descending node | Descending node | Descending node | Ascending node | Ascending node | Ascending 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

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

### Saros 128

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.
| Greatest | First | First | First | First |
| The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds. | Penumbral | Partial | Total | Central |
| The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds. | 1304 Jun 18 | 1430 Sep 02 | 1845 May 21 | 1899 Jun 23 |
| Last ||||
| The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds. | Central | Total | Partial | Penumbral |
| The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds. | 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.
Series members 29–50 occur between 1801 and 2200: :
| 29 | 29 | 30 | 30 | 31 | 31 |
| 1809 Apr 30 | 1809 Apr 30 | 1827 May 11 | 1827 May 11 | 1845 May 21 | 1845 May 21 |
| 32 | 32 | 33 | 33 | 34 | 34 |
| 1863 Jun 01 | 1863 Jun 01 | 1881 Jun 12 | 1881 Jun 12 | 1899 Jun 23 | 1899 Jun 23 |
| 35 | 35 | 36 | 36 | 37 | 37 |
| 1917 Jul 04 | 1917 Jul 04 | 1935 Jul 16 | 1935 Jul 16 | 1953 Jul 26 | 1953 Jul 26 |
| 38 | 38 | 39 | 39 | 40 | 40 |
| 1971 Aug 06 | 1971 Aug 06 | 1989 Aug 17 | 1989 Aug 17 | 2007 Aug 28 | 2007 Aug 28 |
| 41 | 41 | 42 | 42 | 43 | 43 |
| 2025 Sep 07 | 2025 Sep 07 | 2043 Sep 19 | 2043 Sep 19 | 2061 Sep 29 | 2061 Sep 29 |
| 44 | 44 | 45 | 45 | 46 | 46 |
| 2079 Oct 10 | 2079 Oct 10 | 2097 Oct 21 | 2097 Oct 21 | 2115 Nov 02 | 2115 Nov 02 |
| 47 | 47 | 48 | 48 | 49 | 49 |
| 2133 Nov 12 | 2133 Nov 12 | 2151 Nov 24 | 2151 Nov 24 | 2169 Dec 04 | 2169 Dec 04 |
| 50 ||
| 2187 Dec 15 ||

### Tritos series

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

### Inex series

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
Series members between 1801 and 2200 :
| 1823 Jan 26 (Saros 121) | 1823 Jan 26 (Saros 121) | 1852 Jan 07 (Saros 122) | 1852 Jan 07 (Saros 122) | 1880 Dec 16 (Saros 123) | 1880 Dec 16 (Saros 123) |
| 1909 Nov 27 (Saros 124) | 1909 Nov 27 (Saros 124) | 1938 Nov 07 (Saros 125) | 1938 Nov 07 (Saros 125) | 1967 Oct 18 (Saros 126) | 1967 Oct 18 (Saros 126) |
| 1996 Sep 27 (Saros 127) | 1996 Sep 27 (Saros 127) | 2025 Sep 07 (Saros 128) | 2025 Sep 07 (Saros 128) | 2054 Aug 18 (Saros 129) | 2054 Aug 18 (Saros 129) |
| 2083 Jul 29 (Saros 130) | 2083 Jul 29 (Saros 130) | 2112 Jul 09 (Saros 131) | 2112 Jul 09 (Saros 131) | 2141 Jun 19 (Saros 132) | 2141 Jun 19 (Saros 132) |
| 2170 May 30 (Saros 133) | 2170 May 30 (Saros 133) | 2199 May 10 (Saros 134) | 2199 May 10 (Saros 134) |

### Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two annular solar eclipses of Solar Saros 135.
| September 1, 2016 | September 12, 2034 |