Literal Ticking Clock/Real Time Plays?

Hey folks! I love doing my research when writing a piece and am looking for (as the title says) plays that are both real time (one continuous scene) and have a literal ticking clock (i.e. "It is 7:00pm now, xyz is going to happen at 8:00pm" energy).

I'm usually quite well versed in my plays, but I'm struggling to find something of this sort. The closest I've found in my google searches/my own mind grapes has been "Mercury Fur" (not literal ticking clock, but a ticking clock nontheless for when the Party Guest arrives).

Film wise, I'm currently watching "Saturday Night" which fits the bill, but would love to read a play that does the same thing!

Thanks all! :)