Moon phases in December 2023
All 31 days, computed from the ephemeris rather than copied from another calendar: the Moon’s sign, the exact instant it changes sign, and the lit fraction of the disc. Shown in your own timezone.
- New MoonDecember 1220.7° Sagittarius
- Cold MoonDecember 275.0° Cancer
Day by day
The four quarter instants are marked on the day they fall; every other day carries the interval it is in. Four of the eight phases are moments and four are stretches, which is the one thing most calendars leave out.
| Date | Phase | Sign | Illumination | Notes | |
|---|---|---|---|---|---|
| Fri 1 | Waning Gibbous | Cancer→Leo | 83% | ||
| Sat 2 | Waning Gibbous | Leo | 75% | ||
| Sun 3 | Waning Gibbous | Leo | 66% | ||
| Mon 4 | Waning Gibbous | Leo→Virgo | 57% | ||
| Tue 5 | Last Quarter | Virgo | 48% | ||
| Wed 6 | Waning Crescent | Virgo→Libra | 38% | ||
| Thu 7 | Waning Crescent | Libra | 29% | ||
| Fri 8 | Waning Crescent | Libra | 21% | ||
| Sat 9 | Waning Crescent | Libra→Scorpio | 13% | ||
| Sun 10 | Waning Crescent | Scorpio | 7% | ||
| Mon 11 | Waning Crescent | Scorpio→Sagittarius | 3% | ||
| Tue 12 | New Moon | Sagittarius | 0% | ||
| Wed 13 | Waxing Crescent | Sagittarius→Capricorn | 0% | ||
| Thu 14 | Waxing Crescent | Capricorn | 3% | ||
| Fri 15 | Waxing Crescent | Capricorn→Aquarius | 8% | ||
| Sat 16 | Waxing Crescent | Aquarius | 16% | ||
| Sun 17 | Waxing Crescent | Aquarius→Pisces | 25% | ||
| Mon 18 | Waxing Crescent | Pisces | 36% | ||
| Tue 19 | First Quarter | Pisces→Aries | 47% | ||
| Wed 20 | Waxing Gibbous | Aries | 58% | ||
| Thu 21 | Waxing Gibbous | Aries | 69% | ||
| Fri 22 | Waxing Gibbous | Aries→Taurus | 79% | ||
| Sat 23 | Waxing Gibbous | Taurus | 87% | ||
| Sun 24 | Waxing Gibbous | Taurus→Gemini | 93% | ||
| Mon 25 | Waxing Gibbous | Gemini | 98% | ||
| Tue 26 | Waxing Gibbous | Gemini→Cancer | 100% | ||
| Wed 27 | Full Moon | Cancer | 100% | ||
| Thu 28 | Waning Gibbous | Cancer | 98% | ||
| Fri 29 | Waning Gibbous | Cancer→Leo | 94% | ||
| Sat 30 | Waning Gibbous | Leo | 89% | ||
| Sun 31 | Waning Gibbous | Leo→Virgo | 82% | ||
Rows are UTC calendar days. The exact times follow the timezone setting above, so a time close to midnight can belong to the neighbouring day in your own zone.
- 1
- Full moons
- 1
- New moons
- 14
- Sign changes
- 100%
- Brightest night
The Moon passes through 15 signs this month, in order: Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo. It changes sign 14 times — roughly every two and a third days, though not evenly, because the Moon’s speed varies about twelve per cent over an orbit.
Frequently asked questions
When is the full moon in December 2023?
There are 1 in December 2023. The exact instants are in the table above, shown in your own timezone, with the degree and sign each one falls on.
When is the new moon in December 2023?
There are 1 in December 2023, listed to the minute in the table above along with every other phase of the month.
What timezone are these times in?
Your own, resolved in your browser. The rows are UTC calendar days, so an instant close to midnight can belong to the neighbouring day once converted — the table marks those with a small +1 or −1. You can switch the whole page to UTC if you want to compare it against a site that publishes UTC.
What sign is the Moon in during December 2023?
It moves through 15 of them, changing sign 14 times. The exact instant of each change is in the sign column above. The Moon spends about two and a third days in a sign, which is why it covers the whole zodiac in a month while the Sun takes a year.