Montana Title 7. Local Government § 7-3-4220. Council meetings

(1) Regular meetings of the council must be held on the first Monday after the election of council members and after that meeting at least once each month. The council shall provide by ordinance for the time for holding regular meetings, and special meetings may be called from time to time by the mayor or two council members.

(2) All meetings of the council, whether regular or special, at which any person not a city officer is admitted must be open to the public.