The Death of Eric Cartman - S9-E6
Corrected entry: When Cartman is walking the streets thinking he's died, it's a school day since you see him visit the school swarming with pupils and he is seen waiting with the other boys at the bus stop. But if it's a school day, what's Butters doing at home? And if it's because he's sick, why is he outside shovelling the snow off the driveway?
Correction: Cartman sees Butters on an obviously different day. He leaves the school playground, crying, and eventually crosses a bridge during sunset. When he walks past a house, the sky is dark and stars are visible. In the scene with Butters, it is daytime again. This new day could be a weekend, holiday, or a day that the students have off for some reason (i.e. teacher meetings).