Local competition and tournament conditions may vary the duration of a match.
8.3 When time expires, play is to continue until the next Touch or Dead Ball and End 
of Play is signaled by the Referee. 
8.3.1 Should a Penalty be awarded during this period, the Penalty is to be taken.
8.4 If a match is abandoned in any circumstances other than those referred to in 
clause 24.1.