
Update (Dec. 5, 10:30 a.m. ET): December's full 'Cold Supermoon' reached peak fullness on Thursday (Dec. 4) just after 6:00 p.m. EST. However, it's not too late to enjoy the highest (and one of the biggest) full moons of the year; the moon will also appear bright and full all night Friday (Dec. 5). Make sure to look up at the year's final supermoon!
Skywatchers are in for a stunning spectacle this week when the second-biggest full moon of 2025, the Cold Supermoon, rises in the east at dusk and appears higher in the night sky than any other full moon of the year.