Section 22(2)(v) in The Tamil Nadu Town Panchayats, Third Grade Municipalities, Municipalities and Corporations (Elections) Rules, 2006
(v)the date or dates on which the votes of electors will be taken should there be a poll which shall be a date not earlier than the seventh day after the last date for the withdrawal of candidature and the hours during which the poll will be open being not less than ten hours between 7.00 a.m. and 5.30 p.m.;