Regular meetings of City Council shall be held at least twice a month. Regular meetings of the City Council shall be held at 7:00 p.m. on the second and fourth Tuesdays of each month or on such other days as Council may by ordinance prescribe. Special meetings may be held at any time upon the call of the Mayor or any three (3) members of Council or upon such notice as Council by rule may prescribe. All meetings shall be open to the public. Four (4) members of Council shall constitute a quorum and the Mayor and Recorder shall be entitled to vote on all matters before Council. The Council may adopt such rules, procedures or order of business as it deems appropriate from time to time and in the absence of such rules adopted by Council, the proceedings of Council shall be governed by the rules of parliamentary procedure contained in Roberts' Rules of Order.