Summary (tl;dr)

The December 2025 full moon, known as the "Cold Moon," is trending as it is also a Supermoon, marking the last and one of the most significant full moons of the year, appearing notably larger and brighter.

Essential Background

A full moon occurs when the Earth is positioned directly between the Sun and the Moon, causing the entire lunar face to be illuminated from our perspective. The term "supermoon" is commonly used to describe a full moon that coincides with the Moon being at or near its perigee, which is the closest point in its elliptical orbit around Earth. This close proximity makes the Moon appear slightly larger and brighter in the night sky than an average full moon.

The Full Story

The December 2025 full moon, traditionally dubbed the "Cold Moon," is reaching its peak illumination on Thursday, December 4, 2025, at 6:14 p.m. Eastern Time (23:14 GMT). This celestial event is generating significant buzz because it is also classified as a "Supermoon," making it the last Supermoon of 2025. It is the third consecutive Supermoon this year, following similar events in October and November. Observers are keen to view this particular Supermoon as it is projected to appear approximately 7.9% larger and 15% brighter than an average full moon. Furthermore, for those in the Northern Hemisphere, this Cold Supermoon will ascend higher in the night sky than any other full moon until 2042.

Why It Matters

This December Supermoon is garnering attention as it presents the final opportunity in 2025 for skygazers to witness the Moon in a notably enlarged and brighter state. Its occurrence near the winter solstice means it will achieve a particularly high position in the Northern Hemisphere's night sky, offering an impressive and easily observable spectacle without the need for specialized astronomical equipment. Beyond its visual appeal, there is also a cultural and astrological interest, with some individuals exploring its potential for personal transformation and manifesting desires, particularly as it aligns with specific planetary positions and nakshatras.

Geographic Location

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