April 15th Holidays: Celebrations and Observances Worldwide

April 15th 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 April 15th.

Holidays on April 15th

  • Major League Baseball celebrates "Jackie Robinson Day" each April 15 in all MLB ballparks.
  • In the United States, April 15 is the official deadline for filing tax returns: all forms mailed to the IRS must be postmarked no later than this day, so many post offices across the country stay open until midnight to accommodate procrastinators (or those who owe tax and want to wait as late as possible to pay). (If this day falls on the weekend, as in 2006, the following Monday becomes the deadline. Additionally in 2006, Patriot's Day moved the tax deadline to Tuesday, April 18, for those in
  • Father Damien Day ? celebrated annually in Hawai'i.
  • Arirang Festival is held in North Korea to commemorate Kim Il-sung's birth.
  • Blessed Waltman of Antwerp
  • Ancient Latvia ? Tipsa Diena was observed.
  • Roman Empire ? the Fordicia was celebrated in honor of Terra.

Saints celebrated on April 15th

  • Saint Paternus
  • Saint Petrus Gonzalez
  • Saint Hunna.
  • Saint Basilissa