Flight Leonardo da Vinci–Fiumicino Airport departs from Rome Leonardo da Vinci–Fiumicino Airport at 11:00 and arrives at Taipei Taoyuan International Airport at 05:40.
The flighttime is about 12h 40m. The distance travelled ("as the bird flies"): 11974 Km. So the average speed is roughly 945 Km.
There is an 6 hour time difference between Rome and Taipei