The city council shall hold its regular meetings at least once a month on a date certain established by resolution or ordinance of the council, and may prescribe by ordinance the manner in which special meetings may be called as well as the establishment of any additional regular meetings desired. If a regular meeting falls upon a holiday, the meeting must be held upon the next business day with the same effect as if conducted upon the day appointed. All regular and special meetings must be held at a time and place designated by the city council. The meeting for the organization of the city council must be held in conjunction with the first meeting in July of each even-numbered year.