The largest known solar storm occurred, causing electrical problems to telegraph services.
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The Wars of Castro ended when Pope Innocent X and his forces destroyed the Italian city of Castro.
Great Britain and its colonies spent their last day using the Julian calendar.
The first battle between the Spanish settlers and the Mexican natives of the Otomi and Tlaxcalans tribespeople started.
Peggy Whitson set a NASA record for spending the most cumulative days living and working in space at 665 days.
Dieudonne Costes and Maurice Bellonte successfully flew the first non-stop transatlantic flight from east to west when they landed in New York City.