Monday, 30 June 1986
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 1986?
- Asteroid Day 1986 is on Monday, 30 June 1986.
- What day of the week is Asteroid Day 1986?
- It falls on Monday.
- How is Asteroid Day calculated?
- This event is observed every year on 30 June.