December 7, 2025: Waning Gibbous Moon Phase Observed
On December 7, 2025, the Moon was in its Waning Gibbous phase, with 89% illumination, following the recent Cold Supermoon.
On December 7, 2025, the Moon entered its Waning Gibbous phase, exhibiting 89% illumination. This phase follows the Full Moon, during which the visible portion of the Moon decreases each night until it reaches the Last Quarter phase.
The preceding Full Moon, known as the Cold Moon, occurred on December 4, 2025, at 6:14 p.m. ET. This event was also a supermoon, appearing larger and brighter due to the Moon's proximity to Earth.
During the Waning Gibbous phase, the Moon rises later each night and is visible in the early morning hours. Observers can see prominent lunar features such as the Serenitatis and Tranquillitatis mares with the naked eye. Using binoculars or a telescope enhances the viewing experience, revealing details like the Gassendi Crater, Endymion Crater, and the Apennine Mountains.
The next Full Moon, referred to as the Wolf Moon, is expected on January 3, 2026.