A suitable flag shall be hoisted and displayed on the state house flagstaff during the hours when the senate or house of assembly is in session, and on such days as the governor is present at the state house for the transaction of state business in the discharge of his official duty, and it shall be the duty of the custodian of the state house, or such person as shall be delegated to take care of such building, to display such flag during the hours intervening between sunrise and sunset upon all national holidays.
N.J.S. § 52:3-3