Events

International Observe the Moon Night is an annual world-wide public engagement program that encourages observation, appreciation, and understanding of our Moon and its connection to NASA planetary science and exploration.

Everyone on Earth is invited to learn about lunar science and exploration, take part in celestial observations, and honor cultural and personal connections to the Moon. We encourage everyone to interpret “observe” broadly!

International Observe the Moon Night occurs annually in September or October, when the Moon is around first quarter ― a great phase for evening observing. A first-quarter Moon offers excellent viewing opportunities along the terminator (the line between night and day), where shadows enhance the Moon’s cratered landscape.

You can join International Observe the Moon Night from wherever you are. Attend or host a virtual or in-person event, or observe the Moon from home. Connect with fellow lunar enthusiasts around the world by using #ObserveTheMoon on your preferred social media platform and visiting the International Observe the Moon Night Flickr group.

Outdoors, at home, online, or wherever you may be, we’re glad to have you with us. However you choose to observe, please follow local guidelines on health and safety.