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History of Lunar Calendar

 Lunar Calendar (c. 15000 B.C.E)

   Early human record the passing of time


The earliest known lunar calendar is in the caves at Lascaux, southwest France, and dates from around 15,000 B.C.E. Various series of spots represent half of the moon's near-monthly cycle, followed by a large empty
square, which perhaps indicates a clear sky.

What is Lunar Calendar?

A lunar calendar counts months (a period of 29.530588 days) and is based on the phases of the moon. Months have twenty-nine and thirty days alternately, and additional days are added every now and then to keep in step with the actual moon phase.


                                                          (image src=pixabay)

What was it widely used for?

The lunar calendar was widely used in parts of the ancient world for religious observation. Agriculturally the lunar calendar is confusing as it takes no account of annual seasonal variations in temperature, daylight length, plant growth, animal migration, and mating.

The lunar month divides into the solar year twelve times but with 10.88 days remaining.

Brief History

Meton of Athens (circa 440 B.C.E.) noticed that nineteen solar years were equal to 234.997 lunar months. This led to the nineteen-year Metonic cycle where years three, five, eight, eleven, thirteen, sixteen, and nineteen had thirteen lunar months each, and all the other years had twelve months. 



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