Moon Sign Calendar December 2025. The new moon in december 2025 will be on friday, december 19, 2025 at 8:43 pm est. This moon phase calendar shows all phases for the future month of december 2025.
Above you can see our calendar of moon phases for december 2025. And as always, each lunation is imbued with the characteristics of the sign where it occurs, and it impacts the part of your birth chart that contains this sign.