International Observe the Moon Night

An annual celebration of lunar observation, science, and exploration.

Observe the Moon with NASA

You're invited! The goal of International Observe the Moon Night is to unite people around the world in a celebration of lunar observation, science, exploration, arts, and culture. You can join International Observe the Moon Night from wherever you are. The event occurs annually in September or October, when the Moon is around first quarter. Attend or host a virtual or in-person event, or observe the Moon from home.