Can someone explain me why the there are two different ETAs for the same flight?
https://flightaware.com/live/flight/NCR628/history/20171031/2117Z
https://flightaware.com/live/flight/NCR628/history/20171031/1220Z/ZHCC/PANC
https://flightaware.com/live/flight/NCR628/history/20171031/2117Z
https://flightaware.com/live/flight/NCR628/history/20171031/1220Z/ZHCC/PANC