In case you were wondering when Chicago’s annual holiday traffic crunch will be at its worst, plan on next Thursday being a Crap Sandwich Deluxe.

AAA says traffic jams will be at peak awfulness next Thursday (12/21) between 4-6pm, with roughly double the usual traffic. That’s not to say other days won’t suck, too. AAA also warns that 12/20 will be less-than-awesome.