December: Cold moon – Dec. 4, 6:14 p.m.; as winter approaches, this moon reflects the bitter cold and long nights of December. This is the last supermoon of the year.

It will appear in our skies at the beginning of the week, and what's more, stargazers will be able to catch a glimpse of Mars ...

There's a full moon shining in every calendar month of 2025 on these dates: Jan. 13, Feb. 12, March 14, April 13, May 12, ...

and the Cold Moon occurs in frosty December. At least, that's how it works in the Northern Hemisphere. In the Southern Hemisphere, where the seasons are switched, the Harvest Moon occurs in March ...