Upper Allen Township and Keystone Marker Trust, a non-profit organization, have collaborated to restore the historic Shepherdstown Keystone Marker located on the Gettysburg Pike.
Each NHL game features 60 minutes of playing time, broken down into three 20-minute periods. The league also mandates a 17-minute intermission after the first and second periods to flood and ice and provide the players with a rest period.
The clock stops on every whistle for a referee to assess a penalty or take other action. These stoppages do not have a set time limit. Accounting for the length of each period, intermissions and stoppages during each game, the average regular-season NHL game lasts approximately two hours and 23 minutes.