I'm not sure why the date and time are so mysterious a secret to guard. Pretty much can't pick a worse day and it was presumably chosen for this exact reason. The question is, why?

As someone said, demolition time is likely different for each server. Balmung has crashed a few times and we even had a rollback recently, so I've no idea how that affects the situation. It's possibly set to a server uptime that's fixed, but every maintenance since 3.1 will delay that. We just ... don't know. I already have a house, but I honestly can't think how this could have been handled worse. It's terrible.

Community teams are on holiday now though, so don't expect anything to change. :/