Full Moon Day In December 2025. Our lunar calendar shows the date of all full and new moons in 2025. The december full moon in 2025 will be on sunday december 15, 2025 4:02 am est or 9:02 am utc based on the data provided by nasa.

Full moon calendar and new moon calendar with dates and local times for 2025. Monthly moon phase calendar with exact full moon and new moon dates in your timezone.