11/11/11 is the eleventh day of the eleventh month of the year 2011, which ends with the number, eleven. So that's 3 elevens, which makes it special, because moments like these only come once in a millennium or century (If you disregard the digit before the eleven in the year.).
11/11/11 is supposed to be celebrated on 11:11, but here's the catch, there's a 11:11 a.m. AND 11:11 p.m. So technically, shouldn't we be able to use two wishes?
Also, 11/11/11 is Veteran's Day. So happy early Veteran's Day. We all appreciate that you risked your lives for us.