I would like to suggest that Anet instance overflow servers with the same world event timers as the original target servers of the instance from which the first PC that created the overflow server.
E.g. Assuming Anet creates overflow zone server instances and they just sit there empty until a PC needs it, then at the time the first PC inhabits it, zone timers should be set equal to the same timers from the original zone they would have been sent.
This would allow world events to occur on overflow zones at the same timeframe as the origin zone of the people inhabiting it.
Right now, it is very difficult to attend world-boss events due to the overcrowding that occurs, and when thrown into an overflow server, the world events will not kick off because the timer may be as much as 3 hours out of synchronization with the inhabitant PC’s home world.