Moon calendar, October 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 16 October at 08:20, in Libra. Full Moon on 30 October at 07:32, in Taurus.
The Moon changes sign 13 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 10:28 | 05:36 to 10:28 | |
| Fri 3 | Taurus | ||
| Sat 4 | Taurus, enters Gemini at 17:55 | 10:03 to 17:55 | |
| Sun 5 | Gemini | ||
| Mon 6 | Gemini | ||
| Tue 7 | Gemini, enters Cancer at 04:42 | 00:49 to 04:42 | |
| Wed 8 | Cancer | Last quarter at 10:50 | |
| Thu 9 | Cancer, enters Leo at 17:15 | 11:15 to 17:15 | |
| Fri 10 | Leo | ||
| Sat 11 | Leo | from 23:41 | |
| Sun 12 | Leo, enters Virgo at 05:07 | until 05:07 | |
| Mon 13 | Virgo | ||
| Tue 14 | Virgo, enters Libra at 14:34 | 09:20 to 14:34 | |
| Wed 15 | Libra | ||
| Thu 16 | Libra, enters Scorpio at 21:18 | New Moon at 08:20 | 16:16 to 21:18 |
| Fri 17 | Scorpio | from 17:17 | |
| Sat 18 | Scorpio | all day | |
| Sun 19 | Scorpio, enters Sagittarius at 01:56 | until 01:56 | |
| Mon 20 | Sagittarius | ||
| Tue 21 | Sagittarius, enters Capricorn at 05:18 | 00:56 to 05:18 | |
| Wed 22 | Capricorn | ||
| Thu 23 | Capricorn, enters Aquarius at 08:06 | First quarter at 07:36 | 07:36 to 08:06 |
| Fri 24 | Aquarius | ||
| Sat 25 | Aquarius, enters Pisces at 10:55 | 05:54 to 10:55 | |
| Sun 26 | Pisces | ||
| Mon 27 | Pisces, enters Aries at 14:24 | 09:13 to 14:24 | |
| Tue 28 | Aries | ||
| Wed 29 | Aries, enters Taurus at 19:26 | 13:58 to 19:26 | |
| Thu 30 | Taurus | Full Moon at 07:32 | |
| Fri 31 | Taurus | from 11:21 |
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.