5 ILCS 490/65: Martin Luther King, Jr.

Birthday. The third Monday in January of each year is a holiday to be observed throughout the State and to be known as the birthday of Dr. Martin Luther King, Jr. Within 10 days before the birthday of Dr. Martin Luther King, Jr., in each year the Governor shall issue a proclamation announcing the holiday and designating the official events that shall be held in honor of the memory of Dr. Martin Luther King, Jr., and his contributions to this nation.