How is Asteroid Day calculated?

This event is observed every year on 30 June.

When is Asteroid Day 1991?

Name: Asteroid Day
Start: 1991-06-30
End: 1991-06-30
Location: Worldwide

Sunday, 30 June 1991

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 1991?: Asteroid Day 1991 is on Sunday, 30 June 1991.
What day of the week is Asteroid Day 1991?: It falls on Sunday.
How is Asteroid Day calculated?: This event is observed every year on 30 June.