I was watching The Savage Curtain, which was a few episodes before the end of the series and the following exchange took place between "Lincoln" and Kirk.
KIRK: We'd be honoured to have you aboard, Mister President.
LINCOLN [on viewscreen]: Do you still measure time in minutes?
KIRK: We can convert to it, sir.
So, when didn't Trek measure time in minutes? Seconds, Hours, Days, Weeks, were all mentioned in TOS so why would Kirk make such a statement?
Was there ever an episode that indicated that they measured time differently in the Trek universe?
KIRK: We'd be honoured to have you aboard, Mister President.
LINCOLN [on viewscreen]: Do you still measure time in minutes?
KIRK: We can convert to it, sir.
So, when didn't Trek measure time in minutes? Seconds, Hours, Days, Weeks, were all mentioned in TOS so why would Kirk make such a statement?

Was there ever an episode that indicated that they measured time differently in the Trek universe?