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  2. 1800 - Wikipedia

    en.wikipedia.org/wiki/1800

    1800 was an exceptional common year starting on Wednesday of the Gregorian calendar and a leap year starting on Sunday of the Julian calendar, the 1800th year of the Common Era (CE) and Anno Domini (AD) designations, the 800th year of the 2nd millennium, the 100th and last year of the 18th century, and the 1st year of the 1800s decade. As of ...

  3. Leap year - Wikipedia

    en.wikipedia.org/wiki/Leap_year

    Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the years 1600 and 2000 are. [8] 1800 calendar, showing that February had only 28 days

  4. Century common year - Wikipedia

    en.wikipedia.org/wiki/Century_common_year

    So, in 1582, Pope Gregory XIII introduced a slightly modified version of the Julian Calendar, the Gregorian Calendar, where century years would not be leap years if they are not divisible by 400. Therefore, 1700 is the first century year in the Gregorian Calendar being a common year. The years 1800 and 1900 were also century common years, and ...

  5. Why We Have Leap Years - AOL

    www.aol.com/why-leap-years-184323412.html

    That resulted in the years 1700, 1800, and 1900 losing their leap day, but 2000 adding one. Every other fourth year in all of these centuries would get it's Feb. 29. And with that the calendrical ...

  6. 2024 is a leap year, but why? Here’s the science behind the ...

    www.aol.com/news/2024-leap-why-science-behind...

    Years divisible by 100 (century years such as 1900 or 2000) cannot be leap years unless they are also divisible by 400. (For this reason, the years 1700, 1800, and 1900 were not leap years, but ...

  7. Without Leap Years, Christmas would wind up being in ... - AOL

    www.aol.com/without-leap-years-christmas-wind...

    The post Without Leap Years, Christmas would wind up being in the summer appeared first on TheGrio. ... In the past 500 years, there was no leap day in 1700, 1800 and 1900, but 2000 had one. In ...

  8. Gregorian calendar - Wikipedia

    en.wikipedia.org/wiki/Gregorian_calendar

    The rule for leap years is: Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400. For example, the years 1700, 1800, and 1900 are not leap years, but the year 2000 is. —

  9. Why do we have a leap year? What would happen if we didn’t ...

    www.aol.com/why-leap-happen-didn-t-130000847.html

    To cover the 12 cycles of the moon, the king added 56 days to the 298. Since that would have resulted in an even number, 354, the king rounded his year up to 355. ... The next time a leap year ...