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These terms refer to the celestial event of the full moon. The December 2025 full moon is traditionally known as the 'Cold Moon.' Importantly, this specific full moon was also classified as a 'Supermoon,' meaning it occurred when the moon was near its closest point to Earth in its orbit (perigee), making it appear slightly larger and brighter than a typical full moon.
Search interest spiked because the final full moon of 2025—the 'Cold Supermoon'—reached its peak illumination on Thursday, December 4, 2025, in the late evening/night for many locations. This annual event, especially when it is also a Supermoon, is a major attraction for sky-gazers seeking the best viewing times and information about the spectacle.
The event was highly anticipated and enthusiastically discussed online, especially for its classification as a Supermoon, the third in a consecutive series for 2025. People were eager to view and photograph the phenomenon, which appeared fully illuminated for a period spanning December 3rd to 5th.