The Gettysburg hearings a couple days ago had me look into the Civil War.
Hows this for a coinkidink?
Wikipedia has the Civil War dates as April 12, 1861 – May 9, 1865
(4 years and 27 days)
Using that time frame of 4 years 27 days from election day November 8, 2016 we get December 5, 2020.
D5
https://en.wikipedia.org/wiki/American_Civil_War