1. Timing Rules

2. Length of Parts of the Game
Pre-Game – 30 minutes before kickoff
Quarters – Four 12 minute periods
Between Quarters – One minute
Halftime – When teams leave field – 10 – 20 minutes (15 is the norm)
Mandatory warm up – Three minutes
Overtime intermission – Three minutes
Time outs – One minute (3 per team) (1 on OT)

3. Starting the Clock Clock shall start on snap or free kick other than first touching by K, if clock was stopped because
Ball goes out of bounds
B or R awarded new series
Either team awarded new series following a legal kick
Ball becomes dead behind the goal line
Legal or illegal pass is incomplete
Request for a charged or TV/radio timeout is granted
Period ends
Team attempts to consume time illegally
Penalty for Delay of Game foul is accepted
Fair catch is made

4. Starting the Clock Clock shall start on the ready-for-play signal on a down beginning with a snap if the clock was stopped other than or an untimed down
For an officials time out
Because the ball became dead following a foul provided:
No charged time out during the dead ball interval
Down is not an extension of a period or a try
Action which caused the down to end did not also cause the clock to be stopped.
Because of inadvertent whistle

5. Extending a Period Period shall be extended if during a down which time expires -
There is a foul by either team and the penalty is accepted, except for UNS fouls, nonplayer fouls, loss of down fouls, fouls enforced on subsequent kickoffs, fouls by rule which result in a safety
Double foul
Inadvertent whistle
Touchdown is scored and the try is attempted

6. Extending a Period Period shall NOT be extended if during a down which time expires -
When the defense fouls during a successful try/field goal and offended team accepts results of play with enforcement of penalty from the succeeding spot
Foul by either team and penalty is accepted for UNS, non player fouls, loss of down fouls, fouls enforced on subsequent kickoff, fouls which enforcement by rule results in safety.

9. Near the end of the third period, it is third and 4 for A from B’s 48-yard line. A1 advances to B’s 45 and during the run there is holding by B1. The penalty is accepted. At the end of the down, there are 3 seconds remaining in the period. The referee winds the clock on the ready-for-play. Ruling(s):
Because the penalty was the only reason for the clock to be stopped, the referee properly wound the clock on the ready-for-play signal.
Because the penalty was the only reason for the clock to be stopped, the referee should have ordered the clock to be started with the snap.
The period is automatically extended for one play.
The period ends before A snaps the ball. Move to the 4th quarter.