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

December full moon 2021: ‘Full Cold Moon’ meets string of 3 planets Saturday

December’s full moon on Saturday (Dec. 18), the last of the year, will usher in the winter constellations and notably, three naked-eye planets in the evening.   The moon becomes officially full at 11:36 p.m. EST on Saturday (0436 on Dec. 19), according to Astropixels. For New York City observers, the moon will rise that … Read more