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.
Although hockey features rules concerning the length of each game, certain things can happen that will extend the game significantly. Overtime, injuries and the fact that the clock stops on every whistle cause games to last much longer than their 60-minute time limits.