Moon calendar, December 2021
New Moon on 4 December at 07:43, in Sagittarius. Full Moon on 19 December at 04:35, in Gemini.
The Moon changes sign 14 times this month and is void of course before each change.
| Date | Moon sign | Phase | Void of course |
|---|---|---|---|
| Wed 1 | Libra, enters Scorpio at 11:55 | 04:19 to 11:55 | |
| Thu 2 | Scorpio | ||
| Fri 3 | Scorpio, enters Sagittarius at 12:12 | 05:22 to 12:12 | |
| Sat 4 | Sagittarius | New Moon at 07:43 | |
| Sun 5 | Sagittarius, enters Capricorn at 11:30 | 05:08 to 11:30 | |
| Mon 6 | Capricorn | ||
| Tue 7 | Capricorn, enters Aquarius at 11:48 | 04:42 to 11:48 | |
| Wed 8 | Aquarius | ||
| Thu 9 | Aquarius, enters Pisces at 14:53 | 09:59 to 14:53 | |
| Fri 10 | Pisces | ||
| Sat 11 | Pisces, enters Aries at 21:46 | First quarter at 01:35 | 19:39 to 21:46 |
| Sun 12 | Aries | ||
| Mon 13 | Aries | ||
| Tue 14 | Aries, enters Taurus at 08:10 | 02:52 to 08:10 | |
| Wed 15 | Taurus | ||
| Thu 16 | Taurus, enters Gemini at 20:42 | 16:08 to 20:42 | |
| Fri 17 | Gemini | ||
| Sat 18 | Gemini | ||
| Sun 19 | Gemini, enters Cancer at 09:41 | Full Moon at 04:35 | 06:02 to 09:41 |
| Mon 20 | Cancer | ||
| Tue 21 | Cancer, enters Leo at 21:53 | 14:43 to 21:53 | |
| Wed 22 | Leo | ||
| Thu 23 | Leo | ||
| Fri 24 | Leo, enters Virgo at 08:24 | 06:39 to 08:24 | |
| Sat 25 | Virgo | ||
| Sun 26 | Virgo, enters Libra at 16:23 | 08:39 to 16:23 | |
| Mon 27 | Libra | Last quarter at 02:23 | |
| Tue 28 | Libra, enters Scorpio at 21:16 | 21:10 to 21:16 | |
| Wed 29 | Scorpio | ||
| Thu 30 | Scorpio, enters Sagittarius at 23:08 | 17:10 to 23:08 | |
| Fri 31 | Sagittarius |
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.