The Longest Full Moon of 2021 Is About to Occur. Here’s How to Watch
December’s cold moon, the longest full moon of the year, will debut this Saturday night (December 18), making it the last full moon before the winter solstice in the Northern Hemisphere. To catch the cold moon at its fullest, look up at 11:36 pm EST (0432 UTC on December 19). If you miss that moment, you’ll … Read more