What anniversaries are observed on June 23?

June 23 is the anniversary of Olympic Day, Okinawa Memorial Day. 2 anniversaries are registered for this date.

June 23: Olympic Day, Okinawa Memorial Day

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What Is Olympic Day? Every year on June 23, the world marks "Olympic Day." It co...

What Is Okinawa Memorial Day? June 23 is "Irei no Hi" (Okinawa Memorial Day) in ...