Section 25 in The National Security Guard Rules, 1987
25. Date of dismissal, removal, discharge, and retirement.
(1)The effective date of dismissal, removal, resignation or retirement shall be :-(a)The date mentioned in the order of dismissal or removal or discharge or order sanctioning of accepting resignation or retirement or,(b)If no such date is mentioned, the date on which the order was signed or the date on which the person concerned is relieved from duties, whichever is later.(2)The dismissal, removal, discharge, resignation or retirement of a personal subject to the Act shall not be retrospective.Chapter - V Arrest And Investigation
