Notification under section 10(23C)(iv) recognizes a society's tax-exempt status for specified assessment years. Central Government, by Notification No. S.O.2966 dated 19-5-1987, notifies Indian Meteorological Society, New Delhi, under clause (iv) of sub-section (23C) of section 10 of the Income-tax Act, 1961, recognizing the Society for the purposes of that clause for the assessment years 1985-86 to 1987-88.