Day Guide for Sunday May 18th 2025

This is our day guide for Sunday May 18th 2025 which shows you at a glance what's happening around the world on day 138 of 2025.

Holidays on May 18th 2025

Haiti: Flag and Universities' Day. Celebrates Haiti's educational system and commemorates the creation of the flag at the 1803 Arcahaye Conference.
Turkmenistan: Constitution and Flag Day. Marks Turkmenistan's declaration of independence from the Soviet Union in 1991

Public sector only

Uruguay: Battle of Las Piedras. The Battle of Las Piedras was fought on May 18th 1811 as part of the Uruguayan struggle for independence

May 17th 2025 | Go to Today | May 19th 2025

Observances on May 18th 2025

  • International: International Day for Museums
  • USA: National Cheese Souffle Day
  • USA: National HIV Vaccine Awareness Day
  • USA: National No Dirty Dishes Day
  • USA: National Visit Your Relatives Day
  • United Kingdom: National Numeracy Day
  • International: World Therapeutic Horticulture Day

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