Moon calendar, December 2025
Full Moon on 4 December at 23:14, in Gemini. New Moon on 20 December at 01:43, in Sagittarius.
The Moon changes sign 14 times this month and is void of course before each change.
| Date | Moon sign | Phase | Void of course |
|---|---|---|---|
| Mon 1 | Aries | from 18:14 | |
| Tue 2 | Aries, enters Taurus at 03:12 | until 03:12 | |
| Wed 3 | Taurus | ||
| Thu 4 | Taurus, enters Gemini at 02:48 | Full Moon at 23:14 | 01:50 to 02:48 |
| Fri 5 | Gemini | ||
| Sat 6 | Gemini, enters Cancer at 01:54 | 00:55 to 01:54 | |
| Sun 7 | Cancer | ||
| Mon 8 | Cancer, enters Leo at 02:48 | 01:44 to 02:48 | |
| Tue 9 | Leo | ||
| Wed 10 | Leo, enters Virgo at 07:20 | 04:56 to 07:20 | |
| Thu 11 | Virgo | Last quarter at 20:51 | |
| Fri 12 | Virgo, enters Libra at 16:04 | 14:50 to 16:04 | |
| Sat 13 | Libra | ||
| Sun 14 | Libra | ||
| Mon 15 | Libra, enters Scorpio at 03:51 | 03:36 to 03:51 | |
| Tue 16 | Scorpio | ||
| Wed 17 | Scorpio, enters Sagittarius at 16:38 | 15:24 to 16:38 | |
| Thu 18 | Sagittarius | ||
| Fri 19 | Sagittarius | ||
| Sat 20 | Sagittarius, enters Capricorn at 04:52 | New Moon at 01:43 | 03:40 to 04:52 |
| Sun 21 | Capricorn | ||
| Mon 22 | Capricorn, enters Aquarius at 15:51 | 14:43 to 15:51 | |
| Tue 23 | Aquarius | ||
| Wed 24 | Aquarius | from 21:41 | |
| Thu 25 | Aquarius, enters Pisces at 01:08 | until 01:08 | |
| Fri 26 | Pisces | ||
| Sat 27 | Pisces, enters Aries at 08:01 | First quarter at 19:09 | 07:03 to 08:01 |
| Sun 28 | Aries | ||
| Mon 29 | Aries, enters Taurus at 11:57 | 02:13 to 11:57 | |
| Tue 30 | Taurus | ||
| Wed 31 | Taurus, enters Gemini at 13:13 | 12:24 to 13:13 |
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
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.