Juneteenth; designate as a legal holiday in the State of Mississippi.

HB 579 would add June 19 (Juneteenth) to Mississippi's official list of legal holidays under state law, making it a day when state offices and many public institutions close. This change directly affects state employees, public schools, and government operations, as they would observe June 19 as a paid holiday. The bill amends Mississippi Code Section 3-3-7 to explicitly include "the nineteenth day of June (Juneteenth)" in the list of recognized holidays. It does not change existing holiday rules for private businesses or alter other holiday designations in the code.