Asteroid Day 1955

Thursday, 30 June 1955

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 1955?
Asteroid Day 1955 is on Thursday, 30 June 1955.
What day of the week is Asteroid Day 1955?
It falls on Thursday.
How is Asteroid Day calculated?
This event is observed every year on 30 June.