The state’s name is derived from the Mississippi River, which flows along and defines its western boundary. Mississippi became the second state to declare its secession from the Union, and it was one of the founding members of the Confederate States. The 26-mile section of the Mississippi Gulf Coast that stretches from Biloxi to Henderson Point is the longest man-made beach in the world. Countryaah.com: Offers a full list of nationwide and statewide holidays in Mississippi starting from January 1st – New Year’s Day. Also covers the most recent three years of public holidays within the state of Mississippi.