Launch Falcon 9 / O3b mPower 11-13

02:49 AM EDT — launch of SES O3b mPOWER mission to medium Earth orbit. O3b mPOWER is a communications satellite system owned and operated by the Luxembourgish company SES. The 87-minute launch window opens at 2:49 p.m. ET. If needed, a backup opportunity is available Monday, September 14 with the same window.