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because the earth takes 365 days to complete 1 revolution, and the .25 day adds up to 1 whole day after 4 years. (leap year)

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Q: Why is one year equal to 365.25 days?
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How many days are in a century?

There are 36525 days in a century. Ignoring Leap Years: the average (mean) length of a year is 365.25 and there are one hundred years in a century.365.25 × 100 = 36525 days


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One Neptune year is equal to 60,190 earth days.


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One year on Jupiter is equal to about 4,333 Earth days.


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One year on Earth is equal to approximately 0.24 years on Mercury. This is because Mercury's orbit around the Sun is much shorter, taking about 88 Earth days to complete one orbit.


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225 Earth days.


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None of them. One year is equal to: 365.25 days.


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