Solar eclipse of September 21, 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.

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[1]

Solar eclipse series sets from 2022–2025
Ascending node				Descending node
Saros	Map	Gamma		Saros	Map	Gamma
119	2022 April 30 Partial	-1.19008		124	2022 October 25 Partial	1.07014
129	2023 April 20 Hybrid	-0.39515		134	2023 October 14 Annular	0.37534
139	2024 April 8 Total	0.34314		144	2024 October 2 Annular	-0.35087
149	2025 March 29 Partial	1.04053		154	2025 September 21 Partial	-1.06509

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's descending node.

21 eclipse events, progressing from north to south between July 11, 1953 and July 11, 2029
July 10–12	April 29–30	February 15–16	December 4–5	September 21–23
96	98	100	102	104
July 12, 1915	April 30, 1919	February 15, 1923	December 5, 1926	September 22, 1930
106	108	110	112	114
July 11, 1934	April 30, 1938	February 15, 1942	December 4, 1945	September 22, 1949
116	118	120	122	124
July 11, 1953	April 30, 1957	February 15, 1961	December 4, 1964	September 22, 1968
126	128	130	132	134
July 10, 1972	April 29, 1976	February 16, 1980	December 4, 1983	September 23, 1987
136	138	140	142	144
July 11, 1991	April 29, 1995	February 16, 1999	December 4, 2002	September 22, 2006
146	148	150	152	154
July 11, 2010	April 29, 2014	February 15, 2018	December 4, 2021	September 21, 2025
156	158	160	162	164
July 11, 2029	April 29, 2033	February 15, 2037	December 4, 2040	September 21, 2044