Autumnal Equinox (Narsilion)Fall will officially arrive Thursday morning at 9:21AM and the first day of fall is officially known as the Autumnal Equinox. You know the day where we get exactly 12 hours of day and night. Well, that isnt exactly true and viewer Mark Armstrong from Erie, Illinois wanted to know why and Im sure he is not the only one.There are a couple of reasons why sunrise and sunset arent exactly 12 hours...