On September 1 at a location in the Northern Hemisphere, the Sunrise was 7:28 A.M. and Sunset was 7:03 P.M. On September 30, the Sunrise was at 8:03 A.M. and the Sunset at 6:08 P.M. What was the average change in Daylight per day, in minutes, during this month? (Assume all times are daylight saving time.
average daylight change =
