Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N8929S - Boeing 737MAX 8 - Southwest Airlines SWA968/WN968, Baltimore/Washington Thurgood Marshall (BWI) to Sacramento (SMF) - 4.3 mi away @ 36900 ft, heading W at 419 mph. Spotted 36x before! [08:13:32 PM CST] #AC5066 #N8929S #B38M #SOUTHWEST #SWA968 #WN968 #ADSB #ADSBbot