post‧date /ˌpəʊstˈdeɪt $ ˌpoʊst-/ verb [transitive]

1. if you postdate a cheque, you write it with a date that is later than the actual date, so that it will not become effective until that time ⇒ backdate

2. to happen, live, or be made later in history than something else ⇒ predate:
Some of the mosaics postdate this period.

[TahlilGaran] Dictionary of Contemporary English ▲