Why Is February 29 Added to the Calendar Every Four Years?

Discover why February 29 exists and how leap years keep our calendar aligned with Earth's orbit around the sun.

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February 29 is added to the calendar every four years as a corrective measure, because the Earth does not orbit around the sun in precisely 365 days. The actual solar year is approximately 365.24 days. By adding a leap day in February every four years, the Gregorian calendar aligns more closely with the Earth's position in relation to the sun, ensuring seasons and calendar dates remain consistent over time.

FAQs & Answers

  1. What is the purpose of February 29? February 29 is added as a leap day every four years to correct the difference between the calendar year and the actual solar year, ensuring seasons stay aligned.
  2. Why does the Earth’s orbit affect the calendar? The Earth takes approximately 365.24 days to orbit the sun, so adding February 29 every four years compensates for the extra 0.24 days each year.
  3. How does the Gregorian calendar handle leap years? The Gregorian calendar adds a leap day every four years, except for years divisible by 100 but not by 400, to keep the calendar year synchronized with the Earth's orbit.

Watch More

If you found this explanation about February 29 and leap years interesting, explore our related videos on calendar history, Earth's orbit, and how timekeeping has evolved over centuries.

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