September 16th Holidays: Celebrations and Observances Worldwide

September 16th is a day filled with various holidays, celebrations, observances, and historical significance around the world. From international events to national holidays and religious commemorations and saints, this date holds special meaning for many cultures and communities. Explore the list of holidays, observances and saints celebrated on September 16th.

Holidays on September 16th

  • Mexico - Independence Day (from Spain; proclaimed 1810, recognised 1821, instituted 1825; See Fiestas Patrias)
  • Also see September 16 (Eastern Orthodox liturgics)
  • RC Saints - Saint Cyprian, Pope Cornelius, Saint Ludmila
  • In ancient Greece, the third day of the Eleusinian Mysteries, when the initiates walked to the sea at Phaleron and purified themselves in the water.
  • Papua New Guinea - Independence Day (from Australia, 1975)

Observances on September 16th

  • International Day for Interventional Cardiology
  • International Day for the Preservation of the Ozone Layer