5. All holders of Bank notes specified in Article 4 shall surrender them to any of the branches/sub-branches/pay offices of the scheduled banks or to any office of the Bangladesh Bank at Dacca, Chittagong, Khulna and Bogra or to any treasury/sub-treasury or to any Head Post Office and Departmental Sub-Post Office in Bangladesh to such extent and in such manner as may be prescribed by the Bangladesh Bank, with the approval of the Government, and notified in the official Gazette, on the following dates:- Thursday the 8th June, 1972 Friday the 9th June, 1972 Saturday the 10th June, 1972 Sunday the 11th June, 1972 Monday the 12th June, 1972 ¹[Tuesday the 13th June, 1972 Wednesday the 14th June, 1972] whereafter these Bank notes shall not be accepted.