Flight Changi Airport departs from Singapore Changi Airport at 00:20 and arrives at Stockholm Stockholm Arlanda Airport at 08:35.The flight has a short stop at Moscow.
The flighttime is about 14h 15m. The distance travelled ("as the bird flies"): 8869 Km. So the average speed is roughly 622 Km.
There is an 6 hour time difference between Singapore and Stockholm