1. But means except.
She works every day but Friday.
Duration of a match
A regulation hockey match lasts 70 minutes which is broken into two halves of 35 minutes each with a break of 5 to 10 minutes. The team with the most goals at the end of the 70 minutes is the winner. It is also possible for a match to end in a draw. But in some matches such as a championship game there must be a winner. In those cases, a match which is tied, it goes into extra time (the first team to score wins), and if necessary, to a shootout.