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

🇨🇦 C-GEKZ - Boeing 737MAX 8 - Air Canada ACA992/AC992, Licenciado Benito Juarez (MEX) to Toronto Pearson (YYZ) - 4.6 mi away @ 37450 ft, heading NE at 625 mph. Spotted 2x before! [04:15:40 AM CST] #C05056 #C_GEKZ #B38M #AIR_CANADA #ACA992 #AC992 #ADSB #ADSBbot