About 60,000,000 results
Open links in new tab
  1. Leap year - Wikipedia

    A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year.

  2. Why do we have leap years? And how did they come about?

    Mar 1, 2024 · Leap years are years with 366 calendar days instead of the normal 365. They happen every fourth year in the Gregorian calendar — the calendar used by the majority of the world. The …

  3. What Is a Leap Year? | NASA Space Place – NASA Science for Kids

    Sep 25, 2025 · What Is a Leap Year? The Short Answer: It takes approximately 365.25 days for Earth to orbit the Sun — a solar year. We usually round the days in a calendar year to 365. To make up for …

  4. LEAP YEAR | definition in the Cambridge English Dictionary

    Is this year a leap year, or a common year--first, second, or third after leap year? The leap year has an intercalary month, and a total of 383 (defective), 384 (regular), or 385 (perfect, or abundant) days. By …

  5. LEAP YEAR Definition & Meaning - Merriam-Webster

    Oct 28, 2025 · The meaning of LEAP YEAR is a year in the Gregorian calendar containing 366 days with February 29 as the extra day.

  6. Why Do We Have Leap Year? - Dictionary.com

    Feb 29, 2024 · Leap years exist in order to keep the seasons from drifting in time during the calendar year. During a leap year, the calendar includes an extra day, February 29. Leap years occur every 4 …

  7. Leap Years (Is 2026 a Leap Year?) - timeanddate.com

    Leap years are years where an extra day is added to the end of the shortest month, February. This so-called intercalary day, February 29, is commonly referred to as leap day.