How is Asteroid Day calculated?

This event is observed every year on 30 June.

When is Asteroid Day 2021?

Name: Asteroid Day
Start: 2021-06-30
End: 2021-06-30
Location: Worldwide

Wednesday, 30 June 2021

Asteroid Day is an international awareness event held each year on 30 June to promote public understanding of asteroids, planetary defence, and the 1908 Tunguska event in Siberia.

Frequently asked questions

When is Asteroid Day 2021?: Asteroid Day 2021 is on Wednesday, 30 June 2021.
What day of the week is Asteroid Day 2021?: It falls on Wednesday.
How is Asteroid Day calculated?: This event is observed every year on 30 June.