Our ultimate guide to observing the moon will help you plan your next skywatching venture whether it be exploring the lunar seas, mountainous terrain, or the many craters that blanket the landscape.

What is the moon phase today? Today, Jan. 19, 2025, the moon is 21 days old, in the Waning Gibbous phase of its lunar cycle. It is 59% illuminated. Moon phases reveal the passage of time in the ...