Update from Kourou: Electrical systems are ready for the final countdown. Launch of #Galileo satellites 19-22 is set for 18:36 GMT (19:36 CET) #Ariane5
Watch LIVE: https://t.co/l9I0cKf31I pic.twitter.com/kmmR2V8ZuR

— ESA (@esa) December 12, 2017