Ok I failed royally at asking this question the first time (messed up so bad I may have to beg Pokemaster to delete it LOL) so let me ask it again. Ok so I'm catching the "Lake Trio" Uxie, Mesprit, and Azlef. I know the times but if I time travel (Set the clock to a time 2 days later at a time to catch Uxie at the corret time) and go up to the hoop it doesn't allow me to catch the others. Can I not time travel or something?
No, you can't. For some reason, when you set the time, it won't allow you to catch the others. Just wait for the right time, and it'll appear.