r6400 v2 Schedule for blocking services

I have set up my router to block all services from 22:10 to 5:30.  I have the latest firmware download to date.

The problem is that sometimes it blocks when it should not and other times it does not block when it should.

Is it possible that it is using a different time zone than the one I have set (Pacific)?

The problem seems worse when I reset the router as opposed to when the router has been online for a few days.