It was 5:30 PM Est before, mind if I ask what happened that changed it over to 9 PM? o:
The 5:30 PM estimate was not made by me, the one who is performing this maintenance.
It was not really an accurate estimate to begin with. Realistically, the assumption was that this maintenance was just going to be a live server analysis and then a server reboot - however our live analysis pointed out a critical flaw in our current infrastructure that we are currently fixing. Most notably, more resource exhaustion. Fun..