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Second full moons in a calendar month (blue moons) 1951–2050

Second full moon (JST)
1952-12-31 14:05
1953-03-30 21:54
1955-10-31 15:03
1958-07-31 01:46
1961-05-30 13:36
1963-12-30 20:03
1966-08-31 09:13
1969-05-31 22:18
1972-01-30 19:58
1974-10-31 10:18
1977-07-30 19:52
1980-04-30 16:35
1982-12-30 20:32
1985-08-30 18:27
1988-05-31 19:53
1991-01-30 15:09
1991-03-30 16:17
1993-10-30 21:37
1996-07-30 19:35
1999-04-30 23:54
2001-12-30 19:40
2004-08-30 11:22
2007-06-30 22:48
2010-01-30 15:17
2010-03-30 11:25
2012-08-31 22:58
2015-07-31 19:42
2018-01-31 22:26
2018-03-31 21:36
2020-10-31 23:49
2023-08-31 10:35
2026-05-31 17:45
2029-01-30 15:03
2029-03-30 11:26
2031-10-30 16:32
2034-07-31 14:54
2037-01-31 23:04
2037-03-31 18:53
2039-12-30 21:37
2042-08-31 11:02
2045-05-31 02:52
2048-01-31 09:14
2050-10-30 12:16
Computed with the JPL DE421 ephemeris and Skyfield (JST). Illumination and age are for 12:00 JST; moonrise and moonset are for Tokyo. Distances are centre to centre. "Supermoon" is not a formal astronomical term.
About this page

A calendar month (JST) contains two full moons 43 times in these 100 years. The Moon does not actually look blue.