How is International Day of Human Space Flight calculated?

This event is observed every year on 12 April.

When is International Day of Human Space Flight 2172?

Name: International Day of Human Space Flight
Start: 2172-04-12
End: 2172-04-12
Location: Worldwide

International Day of Human Space Flight marks the beginning of human space exploration.

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When is International Day of Human Space Flight 2172?: International Day of Human Space Flight 2172 is on Sunday, 12 April 2172.
What day of the week is International Day of Human Space Flight 2172?: It falls on Sunday.
How is International Day of Human Space Flight calculated?: This event is observed every year on 12 April.