QTR 51 is a flight that operates from Doha (OTBD) to Dulles (KIAD).
I do understand that “most of this flight occurs outside FlightAware’s service area” and the “information on the page may be unreliable”.
But it does seem remarkable how regularly this time-traveler manages to arrive at Dulles on the day before it departed.
So is this truly a case of faulty/incomplete input data to FlightAware or might there be some other issue related to the processing/display of the input data by FA? The flight duration is about 15 hours…perhaps that affects some computation?
For the record, the QTR51 schedule is an 11:30 local (= 08:30 GMT) departure from OTBD and a 19:00 EDT arrival into KIAD on the same day.