December 2025 Moon Phase Calendar. All phase dates and times are in the usa eastern time. The name of a current phase, an approximate percent of an illuminated surface of the moon visible from the earth,.

This month will begin on monday, december 1 st with a phase that will be illuminated. The night sky in 2025 promises an array of breathtaking celestial phenomena, from parades of planets to the mesmerizing glow of a supermoon.