Then you do your calibration to find out what frame that egg is on so you can abuse it's IV's. You need to be checking it 3 times ish and if it's all on the same frame, or most of the frames end up on say... 8. You pick that frame when you go look for the various spreads and find a time! (I always use parents IV's btw so make sure you know them first and in what order you put them in.) You'd search on frame 8, delay 604, how many seconds you take to get into the game, and then whatever date you want or the best one you can find. Change the date to that, change the time to one minute before you're supposed to get the pokémon egg at. So.. if it's 14:01:15 (I take 15 secs to get into the game) you change the time on the DS to 14:00:00 and wait one minute, then at 14:01 you start smashing buttons! ;)