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

🇺🇸 N8763L - Boeing 737MAX 8 - Southwest Airlines SWA927/WN927, Denver (DEN) to Chicago Midway (MDW) - 4.5 mi away @ 38225 ft, heading NE at 586 mph. Spotted 39x before! [02:33:44 AM CDT] #AC0F6C #N8763L #B38M #SOUTHWEST #SWA927 #WN927 #ADSB #ADSBbot