January 1

• 45 B.C. For the first time, New Year's Day is celebrated on January 1 as the Julian calendar (named after Julius Caesar) goes into effect.
• 1901: World celebrates what is regarded as the start of the 20th century.
• 1908: For the first time, a ball is dropped in New York City's Times Square to mark the New Year.
• 2000: The predicted computing breakdown due to the use of two-digit year abbreviations in applications (the year 2000 problem) fails to materialize.

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