On the last day of summer. Autumn officially began at 0350 on September 23, 2019 in Morrisville, PA. As Conrail YPMOR-1 (CSX 6212/CSXT 4428) rolls across South Delmorr Avenue at about 1845, the line of cars and people at the most famous Dairy Queen in railfanning overflows the parking lot with those trying to savor one last taste of summer.