The Ancient Olympic Games were held every four years, and the194th Olympic Games were held in 4 B.C. What year was the next Olympic held? The correct answer is 1 A.D. At that time, they had no concept of zero, and so the first year after 1 B.C. was 1 A.D. Roman and Chinese numerals also started from 1. Zero was invented in the 6 A.D. by the Indian who mediated on “emptiness” and “not-self”. The Indian mathematical notation was prohibited during the medieval Europe but spread throughout Europe after the invention of typography. The “Japanese era name” starts at year 1, too. In East Asian age reckoning, newborns start one year old and one year is added on every New Year. The number on the clock is 1-12. Even in modern times, there are many customs in which the counting starts from 1. Let us find them.

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