I think next time (at the end of this game, at least 7 days from now on) I will anounce when exactly the game begins (in UTC). Then everybody can play about the same time 
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...I think everybody should have an equal time period, or we can say each bet has the same lifetime, for example 7 days or 3 days. So if I bet at Monday this week, the life of this bet will be ends at the next Monday, during the lifetime, the owner of the bet has opportunity to win his/her double. The lifetime parameter is one key parameter of the game, of course it can be adjusted to a relatively fixed time as the game goes on day by day. After the change, the game is endless and each bet has the same lifetime.
