January 19 - the Unix epoch completes itself as the number of seconds since January 1, 1970 overflows the maximal value that can be stored in 32 bits as a signed integer. Unless reprogrammed, 32 bit computers will malfunction and many Java and JavaScript programs will stop working.
April 25 - Easter occurs on its latest possible date. The previous time this occurred was in 1943
... the Panama Canal Zone.
March 3 - Kaiser Wilhelm II of Germany becomes the first person to make a political recording of a document, using Thomas Edison's cylinder.
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