Statutes affecting the budget of any political subdivision enacted finally at any regular session of the General Assembly shall be effective on the date specified by that one of the following rules of construction in effect on the date of final enactment of the statute:

(1) Final enactment before May 18, 1929.--immediately upon final enactment unless a different date is specified in the statute itself.

(2) Final enactment on or after May 18, 1929 and before June 4, 1941.--on the first day of September next following their final enactment unless a different date is specified in the statute itself.

(3) Final enactment on or after June 4, 1941 and before August 25, 1951 or on or after May 28, 1953 and before June 6, 1969.--at the beginning of the fiscal year of the political subdivision affected following the date of final enactment of the statute unless a different date is specified in the statute itself.

(4) Final enactment on or after August 25, 1951 and before May 28, 1953.--at the beginning of the fiscal year of the political subdivision affected following the date of final enactment of the statute unless a different date is specified in the statute itself, or if enacted finally after the beginning of such fiscal year, or after the date specified in the statute, immediately upon final enactment.

(5) Final enactment on or after June 6, 1969.--on the date specified in the statute, or if finally enacted thereafter, or if no date is specified, then at the beginning of the fiscal year of the political subdivision affected following the date of final enactment of the statute.