Section 16B(2) in The West Bengal Panchayat Act, 1973
(2)Every Gram Panchayat shall hold within the local limits of the Gram an annual meeting, ordinarily in the month of December every year, of the Gram Sabha after completion of the half-yearly meeting of the Gram Sansads.[Provided that a Gram Panchayat may, in addition to the annual meeting, hold extraordinary meeting of a Gram Sabha at any time if the situation so warrants or if the State Government, by order, so directs and for the purpose of holding such extraordinary meeting, provision of this section shall apply.]
