3h 42min, oct 29, 1969 y - UCLA, Stanford Research Institute, University of California-Santa Barbara, and the University of Utah
Description:
 These 4 universities  figure out a way to communicate with each other using their computers to share their own studies. 
Added to timeline:
Date:
3h 42min, oct 29, 1969 y
Now
 ~ 56 years ago 
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