Asteroid Day 1975

Monday, 30 June 1975

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 1975?
Asteroid Day 1975 is on Monday, 30 June 1975.
What day of the week is Asteroid Day 1975?
It falls on Monday.
How is Asteroid Day calculated?
This event is observed every year on 30 June.