— — —

Upcoming

One cycle of illumination

One synodic month is about 29 days, 12 hours, 44 minutes — the gap between the same phase repeating. The arc below traces illumination across one full cycle, with today marked.

Full moons this year

Traditional Northern-Hemisphere names from the Old Farmer's Almanac. A second full moon falling in the same calendar month is marked as a Blue Moon.

New moons this year

A few lunar facts

Synodic month

29 d 12 h 44 m · phase-to-phase, what almanacs use

Sidereal month

27 d 7 h 43 m · one orbit relative to the stars

Mean distance

384,400 km · perigee ~363k, apogee ~405k

Same face

tidally locked · we see ~59% over a long enough cycle