Indiana Code Title 36. Local Government § 36-4-6-7

Sec. 7. (a) The legislative body shall hold its first regular meeting in January after its election.  In subsequent months, the legislative body shall hold regular meetings at least once a month, unless its rules require more frequent meetings.

(b) A special meeting of the legislative body shall be held when called by the city executive or when called under the rules of the legislative body.