Around the 10 minute mark, despite there being a blackout, sunshine is shown through the window in Barbie's cell.
(at about 35 mins) The shot shows a clock on the wall. The hands depicted on the clock shows the hour hand exactly between 4 and 5 and the minutes hand, 1 minute from 12. The time, if the hour hand is to believed, should indicate 4:30, not 4:59.
When the dome is shown getting dark on the outside, the surrounding countryside is lush and green. It was just obliterated by the MOAB a week ago.