June 30 Anniversaries

Einstein Memorial Day

World Observances

What Is Einstein Memorial Day? June 30 is "Einstein Memorial Day." This date mar...

Wartime Evacuation Day

Historical Anniversaries

What Is Wartime Evacuation Day? Every June 30th is "Wartime Evacuation Day" (集団疎...

Halftime Day (Hāfutaimu Dē)

Other

What Is Halftime Day? June 30th is "Halftime Day" (Hāfutaimu Dē) — the exact mid...