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The concept of the 'month' was originally invented as a unit to coincide with

the cycle of the moon's phases. That period of time is 29.53 days.

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Q: Why is a month approximately 30 days long?
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How long is one month?

A month typically ranges from 28 to 31 days, depending on the month and the year. The average length of a month is 30 days.


How many months are in 13870 days?

A month is approximately 30 days and 13870 days/30 days in a month is 462 1/3 or (462.3333333...) months as: 13870 days = 30 days -------------- --------- x months 1 month 13870/x = 30/1 13870/x = 30 x = 13870/30 x = 462 1/3


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