Moon

Moon Phase Calendar

Every day's moon at a glance, with exact times of each new moon, quarter, and full moon.

Any month from January 1900 to December 2100

This calendar needs JavaScript. Enable JavaScript and reload the page to browse moon phases.

About this calendar

Everything is computed in your browser from Jean Meeus' Astronomical Algorithms; nothing you enter leaves your device. Phase times agree with published almanac values to within about a minute across 1900 to 2100. Day icons show the northern hemisphere view, lit side on the right while waxing; southern observers see the same phase mirrored. Values are for planning and education, not navigation.