1
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leap
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Western culture
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Leap year has an extra day added every four years to synchronize the calendar year with the astronomical year.
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1
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2
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leap
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Western culture
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Leap year occurs every four years, adding an extra day to the calendar in order to synchronize the calendar year with the astronomical year.
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1
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3
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leap
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western countries
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Leap year occurs every 4 years to account for the extra 0.25 days in the solar year.
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1
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4
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leap day
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Western countries
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Leap day occurs every four years in the Gregorian calendar to keep the calendar year synchronized with the astronomical year.
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1
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5
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leap day
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Western countries
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Leap day occurs every four years on February 29 to keep the calendar year synchronized with the astronomical year.
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1
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6
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leap day
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western countries
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Leap day occurs every 4 years in the Gregorian calendar, adding an extra day to the month of February.
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1
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7
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leap day
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western countries
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Recognized as February 29th in the Gregorian calendar, occurs every 4 years to synchronize the calendar with the Earth's orbit.
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1
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8
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leap day
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western countries
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Observed every 4 years in February to align the calendar with the solar year
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1
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