Moon calendar, January 2031
Full Moon on 8 January at 18:25, in Cancer. New Moon on 23 January at 04:31, in Aquarius.
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 | Aries | ||
| Thu 2 | Aries, enters Taurus at 04:19 | 03:18 to 04:19 | |
| Fri 3 | Taurus | from 05:23 | |
| Sat 4 | Taurus, enters Gemini at 16:28 | until 16:28 | |
| Sun 5 | Gemini | ||
| Mon 6 | Gemini | from 20:22 | |
| Tue 7 | Gemini, enters Cancer at 05:31 | until 05:31 | |
| Wed 8 | Cancer | Full Moon at 18:25 | |
| Thu 9 | Cancer, enters Leo at 17:51 | 11:31 to 17:51 | |
| Fri 10 | Leo | ||
| Sat 11 | Leo | ||
| Sun 12 | Leo, enters Virgo at 04:38 | 00:56 to 04:38 | |
| Mon 13 | Virgo | ||
| Tue 14 | Virgo, enters Libra at 13:21 | 01:34 to 13:21 | |
| Wed 15 | Libra | ||
| Thu 16 | Libra, enters Scorpio at 19:31 | Last quarter at 12:47 | 12:47 to 19:31 |
| Fri 17 | Scorpio | ||
| Sat 18 | Scorpio, enters Sagittarius at 22:53 | 20:27 to 22:53 | |
| Sun 19 | Sagittarius | ||
| Mon 20 | Sagittarius, enters Capricorn at 23:52 | 11:39 to 23:52 | |
| Tue 21 | Capricorn | from 21:12 | |
| Wed 22 | Capricorn, enters Aquarius at 23:47 | until 23:47 | |
| Thu 23 | Aquarius | New Moon at 04:31 | |
| Fri 24 | Aquarius | from 21:00 | |
| Sat 25 | Aquarius, enters Pisces at 00:31 | until 00:31 | |
| Sun 26 | Pisces | from 11:25 | |
| Mon 27 | Pisces, enters Aries at 04:06 | until 04:06 | |
| Tue 28 | Aries | ||
| Wed 29 | Aries, enters Taurus at 11:49 | 00:17 to 11:49 | |
| Thu 30 | Taurus | First quarter at 07:43 | |
| Fri 31 | Taurus, enters Gemini at 23:16 | 19:55 to 23:16 |
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.