September 12 Anniversaries

Marathon Day

World Observances

What Is Marathon Day? Every year on September 12, the world marks "Marathon Day....

United Nations Day for South-South Cooperation

World Observances

What Is the United Nations Day for South-South Cooperation? September 12th is th...

Space Day

Historical Anniversaries

What Is Space Day? Every September 12th is "Space Day" (宇宙の日, Uchū no Hi) in Jap...

Hydrographic Survey Day

Historical Anniversaries

What Is Hydrographic Survey Day? Every September 12th is "Hydrographic Survey Da...

Quiz Day

Wordplay Anniversaries

What Is Quiz Day? September 12th is "Quiz Day" in Japan, established in 2021 by ...

Tottori Prefectural Citizens' Day

Other

What Is Tottori Prefectural Citizens' Day? September 12th is "Tottori Prefectura...