How long does the year last?

For a year, Earth makes one revolution around the Sun. The length of its path is 938 886 400 km. This distance exceeds 365.24 days by the Earth. Thus, the calendar year lasts 365 days. In order not to lose 0.24 days, one more day is added to the calendar every four years at the end of February. This year is called leap. In the four centuries, a leap year is added.

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