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

🇺🇸 N78009 - Boeing 777 224ER - United Airlines UAL2328/UA2328, Newark Liberty (EWR) to San Francisco (SFO) - 4.1 mi away @ 35225 ft, heading W at 487 mph. Spotted 9x before. [05:46:22 PM CST] #AA9300 #N78009 #B772 #UNITED #UAL2328 #UA2328 #ADSB #ADSBbot

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

🇺🇸 N2142U - Boeing 777 300ER - United Airlines UAL2328/UA2328, Newark Liberty (EWR) to San Francisco (SFO) - 4.3 mi away @ 36100 ft, heading W at 544 mph. Spotted for first time! [06:36:33 PM CDT] #A1CB0F #N2142U #B77W #UNITED #UAL2328 #UA2328 #ADSB #ADSBbot