These are Public Holidays in that they are noted on most calendars. They are not Federal Holidays.

• February 2nd      Groundhog's Day
• February 14th     Valentine's Day
• Second Tuesday in March                    Mardi Gras
• March 17th          St. Patrick's Day
• April 1st               April Fools' Day
• April 22nd            Earth Day
• Date Varies         Good Friday
• Date Varies         Easter 
• Usually the last Friday in April            Arbor Day
• May 5th               Cinco de Mayo 
• Second Sunday in May                       Mother's Day
• June 14th            Flag Day
• Third Sunday in June                           Father's Day
• August 26th        Woman's Equity Day (click here)
• September 11th  Patriot's Day (It is considered to some to commemorate 9/11)
• September 17th  Constitution/Citizen's Day 
• October 9th          Leif Erickson Day (The first explorer to set foot in NA)
• October 31st       Halloween
• Second Tuesday of November          Election Day
• Last Friday in November                    Black Friday 
• December 7th    Pearl Harbor Remembrance Day 
• December 21st  Winter Solstice
• December 24th  Christmas Eve
• December 26th - January 1st            Kwanzaa
• December 31st    New Year's Eve