Full Moon
The September full moon is exact on Monday, 1 September 2031 at 09:23 UTC, with the Moon in Pisces and 100% of the disc lit.
A full moon in Pisces ends a stretch of not quite knowing. Something you had been hoping about resolves one way or the other, and the relief is usually larger than the disappointment. Opposite a Virgo Sun, it is the moment the details stop mattering and the shape of the thing becomes obvious.
| Month | Date | Sign |
|---|---|---|
| January | 8 January 2031 | Cancer |
| February | 7 February 2031 | Leo |
| March | 9 March 2031 | Virgo |
| April | 7 April 2031 | Libra |
| May | 7 May 2031 | Scorpio |
| June | 5 June 2031 | Sagittarius |
| July | 4 July 2031 | Capricorn |
| August | 3 August 2031 | Aquarius |
| September (this page) | 1 September 2031 | Pisces |
| October | 30 October 2031 | Taurus |
| November | 28 November 2031 | Gemini |
| December | 28 December 2031 | Cancer |
Dates are Universal Time (UT). A station close to midnight can fall on the previous day in the Americas and on the next day in Europe.
Monday 1 September 2031, at 09:23 UTC. That is the instant the Moon stands opposite the Sun: 100% of the disc is lit and the Moon is in Pisces. The instant is the same everywhere — only the clock reading differs.
Pisces, because at the moment of a full moon the Moon sits opposite the Sun and takes the facing sign. It advances by roughly one sign a month, so no two consecutive full moons repeat it.
09:23 UTC is Universal Time. Take five hours off for New York, add one or two for Madrid, add ten or eleven for Sydney. When the instant falls near midnight your local date lands a day either side of 1 September 2031.
30 September 2031, in Aries. Two full moons are 29 or 30 days apart, so the next one normally falls in the following calendar month; the table above lists every full moon of 2031.
Finish rather than begin: settle the debt, return what you borrowed, send the thing sitting in drafts. The disc reads full to the eye for about a day either side of 09:23 UTC on 1 September 2031, and practice allows that whole window. Starting things belongs to the new moon a fortnight later.