WordNet
regulation time
n. (sports) the normal prescribed duration of a game; "the game was finished in regulation time" [ant: overtime]
Usage examples of "regulation time".
There was little point in asking the master why he was looking at the chronometer at this time of day, far from the regulation time for winding it, or how he came to drop it.
Will all those who failed to reach shelter in the regulation time please inform Admin in the usual way?