When:
May 20, 2017 all-day
2017-05-20T00:00:00-06:00
2017-05-21T00:00:00-06:00
Where:
http://www.bipm.org/en/home/
Anniversary of international treaty, signed 20 May 1875, providing for the establishment of an International Bureau of Weights and Measures. The bureau was founded on international territory at Svres, France.
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