Make a wish on November 11, 2011 at 11:11 ?

Is this really a once in lifetime moment to see the time and date in this format, “11/11/11 at 11:11“? Some says this can only be happened on one day every 100 years. While the others believed that this is the right moment to make a wish. This is the only day with a perfect palindrome numbers, where you can read the same as backward and forward.