It's so strange.
Several days ago, I applied Alpha's script to enable automatic network time. Yes, it is successful and I set it to enable.

I set a repeat event in calendar to serve as an alarm on 7:50am repeat every weekday. But strange thing is, today it alarmed at 8:50am, make me late for work. Then I think, is the network time didn't sync? So I go to the Time setup to see the Automatic network time thing, !!! It disappeared!

Anyone experienced this?