| January | | No US Important Dates | | February | | Groundhog Day February 02, 2013 [Saturday] | | St. Valentines Day February 14, 2013 [Thursday] | | Washington's Birthday February 18, 2013 [Monday] | | March | | Daylight Savings Time March 10, 2013 [Sunday] | | Saint Patrick's Day March 17, 2013 [Sunday] | | Good Friday March 29, 2013 [Friday] | | Easter Sunday March 31, 2013 [Sunday] | | April | | April Fool's Day April 01, 2013 [Monday] | | Tax Return Due, Tax Day, IRS Tax Filing Deadline 2013 April 15, 2013 [Monday] | | Tax Return Due, Tax Day April 15, 2013 [Monday] | | Administrative Professionals Day April 23, 2013 [Tuesday] | | May | | Cinco de Mayo May 05, 2013 [Sunday] | | Mother's Day May 12, 2013 [Sunday] | | Armed Forces Day May 18, 2013 [Saturday] | | June | | Flag Day June 14, 2013 [Friday] | | Father's Day June 16, 2013 [Sunday] |
| | July | | Parents' Day July 28, 2013 [Sunday] | | Parents' Day July 28, 2013 [Sunday] | | August | | No US Important Dates | | September | | No US Important Dates | | October | | Boss's Day October 16, 2013 [Wednesday] | | Boss's Day October 16, 2013 [Wednesday] | | Halloween October 31, 2013 [Thursday] | | Halloween October 31, 2013 [Thursday] | | November | | Daylight Savings Time November 03, 2013 [Sunday] | | Chanukah / Hanukkah November 27, 2013 [Wednesday] | | December | | Pearl Harbor Day December 07, 2013 [Saturday] | | Christmas Eve December 24, 2013 [Tuesday] | | Christmas Eve December 24, 2013 [Tuesday] | | Kwanzaa December 26, 2013 [Thursday] | | Kwanzaa December 26, 2013 [Thursday] | | New Year's Eve December 31, 2013 [Tuesday] | | New Year's Eve December 31, 2013 [Tuesday] |
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