The listed holidays are legal holidays in South Dakota.
Martin Luther King, Jr. Day (third Monday in January)
Washington and Lincoln's Birthday (third Monday in February)
Memorial Day (last Monday in May)
Labor Day (first Monday in September)
Native Americans' Day (second Monday in October)
Sundays
New Year's Day (January 1)
Independence Day (July 4)
Veterans Day (November 11)
Thanksgiving Day (fourth Thursday in November)
Christmas Day (December 25)
If a legal holiday falls on Sunday, the following Monday is a holiday and if it falls on a Saturday, the preceding Friday is a holiday.