I flew YVR-YYZ red-eye mid November on the 77W. Flight was scheduled to take off 10:30 pm and land 6:05 am. We killed time by waiting at the gate at YVR until 11:10 pm due to the anticipated strong jet stream, and not being able to land in YYZ before the 6 am curfew. We were the first aircraft to land at YYZ at 6:01 am.