OPEN THREAD, DUMB SHIFT

A train leaves from San Francisco bound for St. Louis going 80 mph. A second train departs Baltimore, also bound for St. Louis, traveling at 65 mph. If the first train slows to 45 mph when it hits the Central Time Zone, how long until Texas finally fucking fires Mack Brown?

Please show your work.

This is the late open thread, and yes, everything remains dumb.