It was in the work day default hours set up of all things. I had it set up to show the work day from 12 AM to 12 AM.

outlook在设置某些功能时会弹出提示 the end date you entered occurs before the start date，解决的办法就是将在日历选项中将工作时间改为12点到12点。

谢谢楼主。很实用的教程。