Where can you find mirage island and sky pillar and how do you get there?

To get to sky pillar fly to Pacifidlog town and surf off the right and go up. You will see a bunch of rocks blocking a path. keep surfing right till you see an area you can get around the rocks. Go through the short maze of rocks and you will see a cave entrance. Welcome to the Sky Pillar. I'm not sure how to get to the top just yet I just found the sky pillars location 5 minutes ago. Mirage Island is a little bit farther down but it doesn't appear all the time. Mirage islands appearances are extremely rare. Each day the game generates a random number for each of hte pokemon in your party, if this matches the number from Mirage Island you will be able to get there. If there is no match the island will not appear. If you box a pokemon its number changes. Since the number changes each day Mirage Island will only be there for that day. If you talk to the man in Pacifidlog Town he will tell you if it is there or not. His house is the lower one on the far right when you are facing the pokemon center. If he spots it head over there immediately.

On the map the sky pillar is the island right by pacifidlog town.
On the map the mirage island appears right at teh bottom of the dark water below sootopolis city. Or the second island im not sure but I thinks its below sootopolis city.