December 2025 moon phases and the Cold Moon
The December 2025 full moon, the Cold Moon, peaks on Thursday, December 4 at 6:14 PM EST (23:14 UTC) with the Moon in Gemini. The new moon falls on Friday, December 19.
All phases this month
Times in Eastern Time; UTC under each. A phase is an instant, not a day, so west of Eastern a late-night phase can land on the evening before.
Every day this month
The disc and the sign at noon Eastern Time; the percentage is how much of the disc is lit.
A month is easy to read; a birth chart is not. If you want the version that accounts for where these moons fall in your own chart, that is what a personal reading is for. See a reading from your birth moon →
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When is the full moon in December 2025?
Thursday, December 4, 2025, at 6:14 PM EST (23:14 UTC). Central, Mountain and Pacific clocks read one, two and three hours earlier than Eastern.
What is the December 2025 full moon called?
The Cold Moon, the traditional name for the December full moon in American almanacs.
What zodiac sign is the December 2025 full moon in?
Gemini, at 13°04′. A full moon stands opposite the Sun, so it falls in the sign across from the Sun's: the Sun is in Sagittarius.
When is the new moon in December 2025?
Friday, December 19, at 8:43 PM EST (Dec 20, 01:43 UTC), with the Moon and Sun together in Sagittarius. A new moon is not visible: the Moon is in the daytime sky beside the Sun.