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  1. February 29 - Wikipedia

  2. When Is the Next Leap Year? - timeanddate.com

  3. Historical Events on February 29 - On This Day

  4. February 29 Events in History - Have Fun With History

  5. Leap day 2024: What is it? When is it? Meaning, origin of Feb. 29

  6. February 29 - Simple English Wikipedia, the free encyclopedia

  7. Leap Day 2024: The science, and history, behind the phenomenon - USA TODAY

  8. Who Decided Feb. 29 Is Leap Day? - TIME

  9. Leap Day, February 29 | Britannica - Encyclopedia Britannica

  10. What Happened on February 29 - HISTORY