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This is a little more historic then mathematical, but its fine in either subject. Back thousands of years ago, ancient civilizations first created a machine to calculate how long it took for an entire year/cycle of seasons to occur. They narrowed it down to about 365.25 days for an entire rotation around the sun. That's also why we have a leap day every 4 years, because we have that extra quarter of a year every year.
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Earn +20 ptsQ: Who decided how many days are in a month and why?
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Continue Learning about Math & Arithmetic
Who decided how many days are in a month?
The number of days in a month are determined by the cycles of the moon.
How many days are in the month of June?
There are thirty days in the month of June.
If 30 days are in a month how many days are in ten months?
There are 300 days if 30 days are in a month.
How many days are in the eight month?
The eighth month is August which has 31 days.
How many days are in the month of January?
31 days.
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