I know how long it takes to breed each Legend, so you have an idea of what it is going to be. I have only successfully managed to obtain these firsthand:
When breeding Pure and Pure, 9 Hours is only a Pure Dragon, so don’t get hopeful!
17 Hours could be Bohemian, Lightspeed or Poisonux.
36 Hours is definitely going to be Norse.
50 Hours could be Legacy, Crystal, Mirror, Wind, Nirobi, Droconos, Ranger, Dual, Avalon, Brainy, Drathic or Valentine.