tomorrow today at 3:49 am EDT, 12:49 am PDT. You know the drill: Don’t buy electronics, cars, computers, etc. Expect things or people from the past to turn up now; you can also use the period to resolve something from the past, too. (This seems to be a time I’m more prone to lock my keys in the car, for some reason.)
When you make plans with people, double-check. Did you say Third Street at 2 p.m., or Second Street at 3 p.m.? Miscommunication is more likely.
Also: BACK UP YOUR COMPUTERS.