On this day: November 1

POSTED: 10:34 PM PDT Oct 31, 2012    UPDATED: 11:00 PM PDT Oct 31, 2012 

The Sistine Chapel's ceiling is unveiled, the National Weather Service makes its first forecast, the U.S. explodes its first hydrogen bomb, and Honda opens its first U.S. factory, all on this day.

OTD November 1 - Pope Pius XII
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Joachim Specht/Wikimedia Commons

1950: Pope Pius XII claims papal infallibility when he formally defines the Assumption of Mary as being an article of faith for Roman Catholics.

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