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9h 40min, sep 17, 1862 y - Battle of Antietam

Description:

Single bloodiest day in US History, bloodiest battle of the war and of any wars. Occurred in Maryland near DC, Lincoln decided to pass the emancipation proclamation after this.

Added to timeline:

Date:

9h 40min, sep 17, 1862 y
Now
~ 163 years ago