[Sinclipse]

I've seen it on a few server, and me and my coder can't figure it out, anyone up for helping?

I want it set up to every 23 hours and 50 minutes a NPC will shout across zones that the server is coming down in 10 minutes. Then at 23 hours and 55 minutes that it'll be coming down in 5 minutes. Then start a countdown from 5 minutes to server shut down, then have the server brought up on it's own...