Area 51 = 5/1 = May 1st

Founding date of the Bavarian illuminati
= 5/1/1776 = May 1st 1776 

That date was a little over a month prior to the adoption of the declaration of independence (July 4th, 1776) 

The Bavarian Illuminati  was founded by Adam weishaupt, a great friend to thomas jefferson (one of the authors of declaration of independence).