Fancy it!

Was just looking at today's date 11.1.11. Hmmm...every year we get one such day like 09.09.09, 10.10.10; but this year we have four such dates. The very first day of this year which is over 1.1.11; today 11.1.11, then we have 1.11.11 and 11.11.11 coming up in the month of November. So any takers for these fancy numbers??