Each year, thousands of people participate at museums, planetaria, schools, universities, observatories, parks, businesses, and backyards around the world. Anyone can participate. All you need to do is look up! Any astronomy club, interested group, or individual can host an event; events range from small family gatherings to community events that draw hundreds of visitors!
The event occurs in September or October, when the Moon is around first quarter. A first quarter Moon is visible in the afternoon and evening, a convenient time for most hosts and participants. Furthermore, the best lunar observing is typically along the dusk/dawn terminator, where shadows are the longest, rather than at full Moon.
You can register your participation at https://moon.nasa.gov/observe-the-moon/register/
Upcoming dates for International Observe the Moon Night
- October 5, 2019
- September 26, 2020
- October 16, 2021