Rocket: Proton M/Briz M; Payload: Eutelsat 5 West B [Eutelsat 5WB], Mission Extension Vehicle-1 [MEV-1]; Date: 9 October 2019, 1017 UTC; Launch site: Baikonur, Kazakhstan. The delivery of the satellites into a supersynchronous transfer orbit was to take a record 15 hours and 54 minutes [too late for this issue].