Here we go again… Today is December 12, 2012 in the Gregorian calendar, and people are waxing poetic about how symmetrical, how repetitive and how unique this date is. (Even people who really should know better.) Some people are even getting married today. I wish them the best of luck.
But let me put my science hat on for a moment, and offer the following statement:
The symmetry / reflexivity / repetitiveness / uniqueness of a date expression such as 12/12/12, 11/11/11 etc. ad nauseam, is not axiomatic. It is an artefact of the presentation layer.
In layman’s terms:
It’s not really like that, it’s just written that way.