Flight Narita International Airport departs from Tokyo Narita International Airport at 20:30 and arrives at Addis Ababa Bole International Airport at 06:45.The flight has a short stop at Seoul.
The flighttime is about 16h 15m. The distance travelled ("as the bird flies"): 10879 Km. So the average speed is roughly 669 Km.
There is an 6 hour time difference between Tokyo and Addis Ababa