postdate

v. t. [ imp. & p. p. Postdated; p. pr. & vb. n. Postdating. ] [ Pref. post- + date. ] 1. To date after the real time; as, to postdate a contract, that is, to date it later than the time when it was in fact made. [ 1913 Webster ]

2. To affix a date to after the event. [ 1913 Webster ]

a. Made or done after the date assigned. [ 1913 Webster ]

Of these [ predictions ] some were postdate; cunningly made after the thing came to pass. Fuller. [ 1913 Webster ]