Historical Holidays January 1st Haiti Independence Day January 2nd 55 MPH Speed Limit Day January 17th Benjamin Franklin Day January 25th National Florida Day January 27th International Holocaust Remembrance Day February 1st National Freedom Day February 17th Presidents' Day March 7th Alexander Graham Bell Day March 8th International Women's Day April 7th International Day of Reflection on the Genocide in Rwanda April 9th National Winston Churchill Day April 12th International Day for Human Space Flight April 13th Thomas Jefferson Day April 22nd In God We Trust Day April 26th International Chernobyl Disaster Remembrance Day May 5th Cinco de Mayo May 9th Europe Day June 14th Flag Day (US) June 19th Juneteenth July 4th United States Independence Day July 5th Venezuela Independence Day July 9th Argentina Independence Day July 18th Nelson Mandela International Day July 20th Colombia Independence Day July 28th Peru Independence Day August 6th Bolivia Independence Day August 6th Hiroshima Day August 15th India Independence Day August 23rd European Day of Remembrance for Victims of Stalinism and Nazism September 11th Libraries Remember Day September 15th El Salvador Independence Day September 15th Guatemala Independence Day September 15th Honduras Independence Day September 16th Mexico Independence Day September 17th Constitution Day (US) September 18th Chile Independence Day October 10th Cuba Independence Day November 3rd Panama Independence Day November 10th Marine Corps Birthday November 23rd Fibonacci Day December 7th National Pearl Harbor Day of Remembrance December 17th Wright Brother's Day