1985:
The episode "The Clock King" begins with a flashback to 7 years before the episode. The episode is set in 1992. This places the flashback in 1985.
It's revealed in the 1992 portion of the episode that Temple Fugate is 36 years old:
It follows that Temple Fugate was 29 years old 7 years before the episode.
That Temple is an efficiency expert, and Hamilton Hill a lawyer is revealed in dialogue during the opening flashback:
