When:
July 1, 2017 all-day
2017-07-01T00:00:00-06:00
2017-07-02T00:00:00-06:00
Where:
http://www.npm.si.edu/zipcodecampaign/
On July 1, 1963, the US Postal service instituted the use of five-digit postal codes.
Image courtesy of Pixabay.com, CC0.
