Each ordinance passed by the Commission shall be published at least once within fifteen (15) days after its adoption by the Commission. All ordinances of the city shall become effective immediately upon the publication thereof, unless a date upon which an ordinance shall become effective, which is subsequent to the date of the publication thereof, is specifically provided in the ordinance itself. The publication of any ordinance in full after its final passage as a part of the published proceedings of the Commission shall constitute publication of such ordinance as required herein.