be before somebody's time

be before (one's) time

To predate one's tenure or birth. A: "Have you ever seen this show?" B: "No, sorry, it's before my time." I don't know how that project was organized—it was before my time at the company.
See also: before, time

be before somebody’s ˈtime

be before the period that a person can remember or was involved in: The Beatles were a bit before my time.There used to be fields behind this house, but that was before your time (= before you started living here).
See also: before, time