01/22/2019 8.1.5 Patch release time?

Hey guys, I get some time off next week and I wanted to understand about what time frame the patch should be available in the US. I would love to take Tuesday off to get a jump start on the new content with my friends.

In the past I’ve seen content released early morning, lunch time, or 5pm+ after work. Is it worth taking the day off, or should we expect the patch to be available in the afternoon/evening?

Thanks!
Lok’tar ogar! For the Horde!
#TeamSaurfang