http://us.battle.net/d3/en/forum/topic/13509281145
We will be performing maintenance beginning on Tuesday, July 22nd at 12:00 AM
PDT and we expect the service to be available again at approximately 8:00 AM
PDT. During this time the game and many web services will be unavailable.
Thank you for your patience.
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台灣時間下午三點開始 耗時8小時 到晚上十一點
PS: PTR是六月25號開的