show time

(noun) the point in time at which an entertainment (a movie or television show etc.) is scheduled to begin. Synonyms: show time.

(noun) the time at which something is supposed to begin. Synonyms: beginning, commencement, first, outset, get-go, start, kickoff, starting time, showtime, offset. Examples: "They got an early start." "She knew from the get-go that he was the man for her."