Moon phases in December 2025
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.
- Cold MoonDecember 413.1° Gemini
- New MoonDecember 2028.4° Sagittarius
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 | |
|---|---|---|---|---|---|
| Mon 1 | Waxing Gibbous | Aries | 83% | ||
| Tue 2 | Waxing Gibbous | Aries→Taurus | 91% | ||
| Wed 3 | Waxing Gibbous | Taurus | 97% | ||
| Thu 4 | Full Moon | Taurus→Gemini | 100% | ||
| Fri 5 | Waning Gibbous | Gemini | 100% | ||
| Sat 6 | Waning Gibbous | Gemini→Cancer | 96% | ||
| Sun 7 | Waning Gibbous | Cancer | 91% | ||
| Mon 8 | Waning Gibbous | Cancer→Leo | 83% | ||
| Tue 9 | Waning Gibbous | Leo | 74% | ||
| Wed 10 | Waning Gibbous | Leo→Virgo | 64% | ||
| Thu 11 | Last Quarter | Virgo | 54% | ||
| Fri 12 | Waning Crescent | Virgo→Libra | 44% | ||
| Sat 13 | Waning Crescent | Libra | 34% | ||
| Sun 14 | Waning Crescent | Libra | 25% | ||
| Mon 15 | Waning Crescent | Libra→Scorpio | 18% | ||
| Tue 16 | Waning Crescent | Scorpio | 11% | ||
| Wed 17 | Waning Crescent | Scorpio→Sagittarius | 6% | ||
| Thu 18 | Waning Crescent | Sagittarius | 2% | ||
| Fri 19 | Waning Crescent | Sagittarius | 0% | ||
| Sat 20 | New Moon | Sagittarius→Capricorn | 0% | ||
| Sun 21 | Waxing Crescent | Capricorn | 2% | ||
| Mon 22 | Waxing Crescent | Capricorn→Aquarius | 5% | ||
| Tue 23 | Waxing Crescent | Aquarius | 11% | ||
| Wed 24 | Waxing Crescent | Aquarius | 18% | ||
| Thu 25 | Waxing Crescent | Aquarius→Pisces | 26% | ||
| Fri 26 | Waxing Crescent | Pisces | 36% | ||
| Sat 27 | First Quarter | Pisces→Aries | 47% | ||
| Sun 28 | Waxing Gibbous | Aries | 58% | ||
| Mon 29 | Waxing Gibbous | Aries→Taurus | 69% | ||
| Tue 30 | Waxing Gibbous | Taurus | 79% | ||
| Wed 31 | Waxing Gibbous | Taurus→Gemini | 88% | ||
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 14 signs this month, in order: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces, Aries, Taurus. 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 2025?
There are 1 in December 2025. 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 2025?
There are 1 in December 2025, 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 2025?
It moves through 14 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.