Moon calendar, December 2031
Tropical zodiac · geocentric, apparent positions · Swiss Ephemeris, checked against NASA JPL DE440 · void of course: last exact conjunction, sextile, square, trine or opposition to the Sun and Mercury to Pluto · times in UTC
New Moon on 14 December at 09:05, in Sagittarius. Full Moon on 28 December at 17:33, in Cancer.
The Moon changes sign 13 times this month and is void of course before each change.
| Date | Moon sign | Phase | Void of course |
|---|---|---|---|
| Mon 1 | Cancer | ||
| Tue 2 | Cancer | ||
| Wed 3 | Cancer, enters Leo at 09:12 | 06:34 to 09:12 | |
| Thu 4 | Leo | ||
| Fri 5 | Leo, enters Virgo at 21:50 | 13:15 to 21:50 | |
| Sat 6 | Virgo | ||
| Sun 7 | Virgo | Last quarter at 03:19 | |
| Mon 8 | Virgo, enters Libra at 08:57 | 08:53 to 08:57 | |
| Tue 9 | Libra | ||
| Wed 10 | Libra, enters Scorpio at 16:43 | 08:39 to 16:43 | |
| Thu 11 | Scorpio | from 21:27 | |
| Fri 12 | Scorpio, enters Sagittarius at 20:39 | until 20:39 | |
| Sat 13 | Sagittarius | ||
| Sun 14 | Sagittarius, enters Capricorn at 21:44 | New Moon at 09:05 | 14:15 to 21:44 |
| Mon 15 | Capricorn | from 19:31 | |
| Tue 16 | Capricorn, enters Aquarius at 21:46 | until 21:46 | |
| Wed 17 | Aquarius | ||
| Thu 18 | Aquarius, enters Pisces at 22:39 | 16:58 to 22:39 | |
| Fri 19 | Pisces | ||
| Sat 20 | Pisces | ||
| Sun 21 | Pisces, enters Aries at 01:56 | First quarter at 00:00 | 00:00 to 01:56 |
| Mon 22 | Aries | from 22:57 | |
| Tue 23 | Aries, enters Taurus at 08:13 | until 08:13 | |
| Wed 24 | Taurus | ||
| Thu 25 | Taurus, enters Gemini at 17:10 | 10:58 to 17:10 | |
| Fri 26 | Gemini | ||
| Sat 27 | Gemini | ||
| Sun 28 | Gemini, enters Cancer at 04:03 | Full Moon at 17:33 | 01:39 to 04:03 |
| Mon 29 | Cancer | from 05:38 | |
| Tue 30 | Cancer, enters Leo at 16:11 | until 16:11 | |
| Wed 31 | Leo |
Go deeper: phases, signs and void of course
Phases. New Moon is the moment the Moon passes the Sun in longitude; first quarter, full and last quarter are 90°, 180° and 270° past it. Each happens at one instant worldwide; only the clock time differs by place.
Signs. The Moon crosses a sign in about two and a half days. These are tropical signs; in a sidereal (Vedic) zodiac the Moon reaches each sign about 24° later, nearly two days after the times shown.
Void of course. From the Moon’s last exact major aspect in a sign until it enters the next sign. William Lilly, in the 17th century, counted only the Sun and the five visible planets; most modern calendars add Uranus, Neptune and Pluto, so their void periods are often shorter. Switch between the two above.