apma77 - here's what i know. i rotated at the west side VA so i know it the best.
600a to 630a - arrive and prep room for first case
700a to 730a - AM "conference", sometimes a lecture, sometimes oral boards type stuff over breakfast
730a to 800a - start first case
basically run cases as assigned for the day, with people finishing early going over to PAT (pre-anesthesia testing) to pre-op future outpatients. attendings and other residents will give breaks and lunches. there are 5 main ORs (1 of which used to be the cardiac OR and is really spacious, the other 4 are a little cramped), 1 "minor" room for ophtho and I&Ds and the like, and 1 cysto room.
VA policy is to be out of the OR by 4p unless it's an "emergency" (usually followed pretty closely by the nurses), so the residents usually leave by 500p at the latest. PAT closes at 400p.
the VA used to be really cush with very few surgeries but now that northwestern is also operating, it's gotten busier. call (weekday and weekend) is home call and if you're called in overnight you typically get to leave early afternoon the following day.
over at UIH (usually referred to as "the U"), residents probably get there by 600a to prep their room, followed by conference every morning from 630a to 700a. then it's off to meet the first patient of the day in the surgicenter holding area. there's an IV tech who usually gets IVs started on the first cases; cases following are a crap shoot depending on how nice the nurses are feeling that day. attendings and fellow residents also give breaks and lunch throughout the day. i think most residents get out between 400p and 500p and if you have to stay late you're first in line to be relieved the next day. call (both weekday and weekend, as far as i know) is in-house, with 2 residents and 1 attending staying the night. i believe OB call is separate, with 1 resident, an M4 extern, and 1 attending.
i don't know what the schedules are like at michael reese or christ, though people at the VA (and possibly christ) sometimes have to take call at michael reese.