Whenever under the provisions of this Charter or any ordinance, rule, regulation or order, it is required that a meeting be held or that an act be done on a date which is a Saturday, Sunday, legal holiday or a day which is not an ordinary working day in the Municipal government, the ensuing secular day, or ordinary working day respectively shall be taken as meant and intended. Notwithstanding the provisions of this section Council and its committees shall be permitted to meet in regular or special session on any Saturday. (Amended 10-15-85.)