Past Events
Here's how you've observed the Moon with us over the years.
Past International Observe the Moon Night Events
International Observe the Moon Night has occurred annually in September or October since 2010, inspired by the arrival of NASA's Lunar Reconnaissance Orbiter at the Moon in 2009. Browse annual participation, event recaps, and community photo galleries below.
| Year (Link to Recap) | Est. Global Participation | Date | Community Events Registered | Individuals/ Households Registered | Photos |
| 2025 | 1M observers in 128 countries | October 4 | 1,074 | 4,285 | 2025 Flickr group |
| 2024 | 1.3M observers in 127 countries | September 14 | 1,497 | 5,038 | 2024 Flickr group |
| 2023 | 0.9M observers in 123 countries | October 21 | 1,587 | 3,243 | 2023 Flickr group |
| 2022 | 1M observers in 125 countries | October 1 | 1,640 | 2,642 | 2022 Flickr group |
| 2021 | 500K observers in 122 countries | October 16 | 1,609 | 2,363 | 2021 Flickr group |
| 2020 | 500K observers in 104 countries | September 26 | 1,743 | 2,032 | 2020 Flickr group |
| 2019 | 102 countries | October 5 | 1,892 | - | 2019 Flickr group |
| 2018 | 75 countries | October 20 | 1,046 | - | 2018 Flickr group |
| 2017 | 50 countries | October 28 | 633 | - | 2017 Flickr group |
| 2016 | 59 countries | 611 | - | 2016 Flickr group | |
| 2015 | 47 countries | 554 | - | 2015 Flickr group | |
| 2014 | 46 countries | 471 | - | 2014 Flickr group | |
| 2013 | 48 countries | 542 | - | 2013 Flickr group | |
| 2012 | 49 countries | 577 | - | 2012 Flickr group | |
| 2011 | 57 countries | 627 | - | 2011 Flickr group | |
| 2010 | 53 countries | 502 | - | 2010 Flickr group |
