| January | | No US Important Dates | | February | | Groundhog Day February 02, 2011 [Wednesday] | | St. Valentines Day February 14, 2011 [Monday] | | Washington's Birthday February 22, 2011 [Tuesday] | | March | | Ash Wednesday March 09, 2011 [Wednesday] | | Saint Patrick's Day March 17, 2011 [Thursday] | | April | | April Fool's Day April 01, 2011 [Friday] | | Tax Return Due, Tax Day April 15, 2011 [Friday] | | May | | Cinco de Mayo May 05, 2011 [Thursday] | | Armed Forces Day May 21, 2011 [Saturday] | | June | | Flag Day June 14, 2011 [Tuesday] | | Father's Day June 19, 2011 [Sunday] |
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