When Fry enters the Cryogenics lab there's no sign on the front door, that is shown in multiple episodes, that lists the time span without power failures.
Fry is riding a yellow bike to recreate his last day before being frozen. Yet in the pilot his bike was a beige color.
Professor Farnsworth establishes that the interior of the strip club is a blank whiteness because Fry never actually went inside back in 1999. This should not apply to his family's home; even if his family is frozen at the last moment he saw them, or the interior starts to go blurry, Fry still knows, or can make assumptions, about the layout.
Fry tries to regain entry into his house after he's dragged out, but Professor Farnsworth states that he never went back into his house after 10pm and therefore there are no memories for him. Fry enters the house and sure enough it's blank, yet it's still daylight outside, which for Dec 31st in New York would not be possible.
The sign on the door to the roof of the cryogenics building is on the wrong side.