We'll only have this day once in our lives.
OK I'm a bit late to the game here, but it's not for lack of desire, but life is busy, but how could I have missed a palindrome and even more rare an ambigram.
A Palindrome is a number that reads the same left to right, right to left.
An Ambigram is when you spin the whole number 180 degrees and it reads the same upside down.
You learn something new every day !!