2 questions and rule

[RookieDude]

Originally posted by Snaqwells
Set the clock at the last known time

What if you know some time has run off...do you still go back and set it at the "last known time" knowing that is not, in fact, correct? What if the time was considerable?

Could the Referee "quess" some time off the clock with: backcourt counts, throw-in counts, closely quarded counts, etc?

RD