On our turn-based server, the games clocks are designed mainly to avoid never ending games.
 
The server maintains game clocks continuously, but the smallest displayed time unit for a game is one hour. Internally running game clocks are updated every 5 minutes.
 
Caution: This means that when your clock displays one hour of time remaining, you might have only seconds left to play before your count will reach 0 and you will lose by time.
 
The game clocks start as soon the game is accepted and they stop when the score is agreed upon.
Caution: This means you can still lose by time during the final PASS or SCORE steps of a game.