4:30 PM EST, my girls went into the coop themselves, got ready for bed, obviously don't care much about the daylight saving time. I leave the coop door open all the time except during cleaning, so they can go in and out between the coop and a secured run as they please. Being that the run is well covered with clear corrugated plastic panels (roof and the bottom half), the girls have plenty of space to roam, look at the "views", enjoy the sunlight and fresh air, and stay dry. There is a solar night light inside our coop, but it will shut off shortly after the girls settle in for the night. I don't plan to add additional light or a heat lamp during the winter. As long as fresh unfreeze water and feed can be provided, windows to control draft and ventilation, I think the chickens should be all right through the frigid weather.