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

🇺🇸 N584NW - Boeing 757 351/W - Delta Air Lines DAL660/DL660, Hartsfield - Jackson Atlanta (ATL) to Salt Lake City (SLC) - 7.0 mi away @ 35900 ft, heading NW at 550 mph. Spotted 6x before! [08:17:48 PM CDT] #A78605 #N584NW #B753 #DELTA #DAL660 #DL660 #ADSB #ADSBbot