Mary Jo: In that kind of game the 1 day is the total amount of time in which you can play moves. Let's ignore the bonuses for now and just imagine a couple of those sand-filled timers. There's one for each player. If the sand runs out then that player lose the match. Unlike the ordinary sand timers, though, these ones don't get turned over. Rather they get switched on and off. Yours is losing sand all the time that it's your turn. When you move yours stops and your opponent's starts losing sand. So, there's not a heap of sand per move but for the whole game.

Now let's consider the bonuses. This has the efect of topping up your sand each time you move, by 3 hours-worth in this case.

Looking at your game it says that you played 9 moves. Your timer will have lost the sand between each move - the period from when your opponent moved to when you did. If you add all that time up then that's more sand than there was available.

So how much sand did you have? 24 hours (the initial 1 day) plus 9 bonuses of 3 hours, giving 51 hours in total. At the point that your opponent made his last move you must have had only 4.5 hours of sand left .. and hence the timeout.