in somebody's day/time

in (one's) day

When one was younger; in one's younger days. In my grandparents' day, planning a wedding wasn't such a colossal ordeal. Back in my day, the only thing we had to do for fun was stickball, and we were grateful for it!

in (one's) time

When one was younger; in one's younger days. In my grandparents' time, planning a wedding wasn't such a colossal ordeal. Back in my time, the only thing we had to do for fun was stickball, and we were grateful for it!
See also: time
Farlex Dictionary of Idioms.

in somebody’s day/time


1 when somebody was most successful, famous, etc: He had, in his day, been one of the greatest opera singers in the world.
2 at the time when somebody was alive; when somebody was young: In my grandmother’s time, women were expected to stay at home and look after the children. In my day, nobody would have spoken to the boss like that.
See also: time
Farlex Partner Idioms Dictionary
See also:
  • in (one's) day
  • just another day at the office
  • day off
  • by night
  • by day
  • face the day
  • from day to day
  • make a day of (doing something)
  • make a day of doing
  • make a day of it