I guess the key word there would be "approximately."

And of course, the range of approximation remains different in each individual's perspective.
So, I would say to hope for 12:01 am, but to expect possible delays in case the devs need to finish some last minute preparations. A possible delay could mean one, two, three hours, or even until when the sun first peeks out onto sleepy, rainy Bellevue, WA. I have full belief that if there are any delays, those delays will be minimal. But again, that's just my belief, and so remains pure opinion.
Besides, think of it this way. When you expect it later, but it in fact
does start at 12:01, then it's even more special of a gift, right?