Mark your calendar: March 23, 2027 is World Meteorological Day.

Did you know March 23, 2026 is World Meteorological Day?

World Meningitis Day is celebrated on October 5, 2027.

Mark your calendar: March 23, 2027 is World Math Day.

World Marbles Day is celebrated on March 26, 2027.

Did you know March 26, 2026 is World Marbles Day?

May 10, 2027 brings World Lupus Day — one of spring's more delightful excuses to celebrate.

May has a surprise: World Lupus Day lands on May 10, 2026.