Apple did a contest that if you were the 25 billionth apple download. First I would have to find the downloads in a second. It was about 570. that meant it was around 34,200 a minute. then we had to find  how many downloads were at 6:30 but before we had to think of the leap year. the downloads at 6:30 were around  24,500,000,000. you subtract that from 25,000,000,000. it gave me about 340,000,000. if you divide your answer by 34,200 you get 9,900 when you divide that by 60 it equals 166 hours left. when you divide that number by 24 it gives you 6.9 days.the leap year really messes things up. i would download it in the evening around 6 because of the big downloads and on march 2nd.