Section 69(1) in The Naval Ceremonial, Conditions Of Service And Miscellaneous Regulations, 1964
(1)Indian Naval ships, when lying in home ports and roads in India, shall hoist their ensigns at 0800 daily, but when abroad, at 0800 or 0900 as the Senior Officer shall direct; and they shall be worn if the weather permit, or the Senior Officer present sees no objection thereto, throughout the day until sunset, when they shall be hauled down.
