SpaceX has delayed the launch of the SES 12 communications satellite until shortly after midnight Friday at Cape Canaveral, allowing teams additional time to complete pre-launch vehicle checks and wait for improved weather conditions. The launch, which was previously set for Thursday, is expected around 12:29 a.m. EDT (0429 GMT) Friday.

Soaring into orbit in a rare middle-of-the-night launch from French Guiana, an Ariane 5 rocket took off at 0520 GMT (12:20 a.m. EST) Wednesday with a Eutelsat communications satellite to boost television capacity ahead of the Rio Olympics.

An Ariane 5 rocket took off on a rare morning launch Thursday with four Galileo navigation satellites, the heavy-lifter’s first flight in support of the European positioning and timing fleet. Liftoff from French Guiana occurred at 1306 GMT (8:06 a.m. EST).