What anniversaries are observed on May 20?

May 20 is the anniversary of World Metrology Day, Tokyo Port Opening Day, Romanization Day. 3 anniversaries are registered for this date.

May 20: World Metrology Day, Tokyo Port Opening Day

♉ Zodiac Taurus

📊 Day 140 of 365 225 days remaining

🌸 Season Spring

What Is World Metrology Day? Every May 20th is "World Metrology Day." It commemo...

What Is Tokyo Port Opening Day? Every May 20th is "Tokyo Port Opening Day" (東京港開...

What Is Romanization Day? Every May 20th is also "Romanization Day" (ローマ字の日, Rōm...