| National Astronaut Day | |
|---|---|
| Observed by | United States |
| Type | Secular |
| Significance | Commemorates the first US human spaceflight in 1961 |
| Date | 5 May |
| Frequency | annual |
National Astronaut Day is an American commemorative day held on May 5 since 2016. [1] It commemorates the first United States human spaceflight, on May 5, 1961, piloted by astronaut Alan Shepard. [2]