Well, I kinda like John Hardly's proposal myself, but how about 77.739 years? *grin*...we could get all sorts of opinions about how old it should be before it's historical.
It is a fact that we NEED to know the status and relevance of all aspects of out culture and history. Some influences are more dynamic and significant than others, but influential doesn't mean they deserve preferential treatment.

Sure...I'll vote for you as King for a Day, John H....you get July 23rd...in return, I want August 18th, just in case you overlook anything.