The Day The Sun Rose Late

Pinkie Pie's "It's A New Year To Cheer!" party gets a little out of control, and Twilight Sparkle has to figure out exactly what happened the next day.

Twilight Sparkle wakes up in the middle of the street, in an awkward position, with a killer hangover. It's mid-morning, but the sun hasn't risen. Ponyville looks like a disaster area.

Just what in the name of Celestia happened at Pinkie Pie's "It's a New
Year to Cheer!" party?