The board of aldermen shall meet in regular session on the first and third Thursdays of each month. The board may meet once in the months of June, July, August, September and December. Should a regular meeting coincide with a legal holiday or for other proper reason, the board may reset the regular meeting to some other date. The mayor, or a majority of the board of aldermen, may call special meetings as often as may be necessary. All regular and special meetings shall be open to the public as required pursuant to the Open Meetings Act, codified at Annotated Code of Maryland, State Government Article, Sections 10-501 through 10-512, as amended, who shall be given reasonable opportunity to be heard. (Acts 1951, Ch. 539, § 10; Res. No. 2-69, § 1; Res. No. 20-81, § 1, 5-14-81; Res. No. 97-1, 2-21-97; Res. No. 97-21, 6-6-7)