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Olympiad
Period of four years associated with the Olympic Games of the Ancient Greeks / From Wikipedia, the free encyclopedia
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An olympiad (Greek: Ὀλυμπιάς, Olympiás) is a period of four years, particularly those associated with the ancient and modern Olympic Games.
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Although the ancient Olympics were established during Greece's Archaic Era, it was not until Hippias that a consistent list was established and not until Ephorus in the Hellenistic period that the first recorded Olympic contest was used as a calendar epoch. Ancient authors agreed that other Olympics had been held before the race won by Coroebus but disagreed on how many; the convention was established to place Coroebus's victory at a time equivalent to the summer of 776 BC in the Proleptic Julian calendar, and to treat it as Year 1 of Olympiad 1. Olympiad 2 began with the next games in the summer of 772 BC.
Thus, for N less than 195, Olympiad N is reckoned as having started in the year BC and ended four years later. For N greater than or equal to 195, Olympiad N began in AD
and ended four years later. By extrapolation, the 4th year of the 700th Olympiad begins roughly around 2 August 2024.
In reference to the modern Olympics, their Olympiads are four year periods beginning on January 1 of the year of the Summer Games. Thus, the modern Olympiad I began 1 January 1896, Olympiad II began 1 January 1900, and so on. Olympiad XXXIII began 1 January 2024.[1] Because the Julian and Gregorian calendars go directly from 1 BC to AD 1, the cycle of modern Olympiads is ahead of the ancient cycle by one year.