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Convert callippic cycle to jiffy (G. N. Lewis)
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Definition and details for callippic cycle:
Callippic cycle, in astronomy and calendar studies, is a particular approximate common multiple of the the tropical year and the synodic month. It was proposed by Callippus in 330 BC. Callippic cycle is a period of 76 years, as an improvement on the 19-year Metonic cycle.
A Metonic cycle was invented by Meton and lasts 6940 days. This means that a solar year is 365 d 6 h 18 min 56 s, but Callippus knew that year length was more closely to 365 + 1/4 days. So he multiplied the 19-year cycle by 4 to reach an integer number of days and dropped 1 day from the last 19-year cycle. Thus he constructed a cycle of 76 years that contains 940 lunations or 27,759 days.
Definition and details for jiffy (G. N. Lewis):
Jiffy was defined by Gilbert Newton Lewis (1875-1946). He proposed a unit of time called the jiffy which was equal to the time it takes light to travel one centimeter. It has since been redefined for different measurements depending on the field of study.

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