Adding the following fleet: Target: Mission: Landing tick: Back:
Paste all (ctrl+a should be ok, but try with just single mission if you get an error, save the ctrl+a output and contact harv) information from missions page here (NOT from news page, and not overview, nor gal status). It's ok to paste when prelaunched, as long as you're sure you won't change your plans.
A valid launch confirmation looks like this, but can also be after the fleet has launched and has ETA/Return ETA shown as last line:
Some fleet name X:Y:Z A:B:C (2+8) 9hrs 28mins Defend Ship Class Target Type Count Viper Corvette Frigate Emp 50 Launching in tick 117, arrival in tick 124, Return ETA: Instant