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  2. Leap year - Wikipedia

    en.wikipedia.org/wiki/Leap_year

    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. The 366th day (or 13th month) is added to keep the calendar year synchronised with the astronomical year or seasonal year. [1]

  3. Perpetual calendar - Wikipedia

    en.wikipedia.org/wiki/Perpetual_calendar

    A table for the Gregorian calendar expresses its 400-year grand cycle: 303 common years and 97 leap years total to 146,097 days, or exactly 20,871 weeks. This cycle breaks down into one 100-year period with 25 leap years, making 36,525 days, or one day less than 5,218 full weeks; and three 100-year periods with 24 leap years each, making 36,524 ...

  4. Template:IsLeapYear - Wikipedia

    en.wikipedia.org/wiki/Template:IsLeapYear

    {{IsLeapYear|year}} year defaults to {{CURRENTYEAR}} (2024). It must be specified in the Gregorian calendar, extended to all epochs using linear year numbering: use the proleptic Gregorian calendar in Christian Era before the change, and the astronomical year convention (using negative numbers, and year 0) in all years BC before the Christian era (there's a difference of 1 in absolute value).

  5. Why We Have Leap Years - AOL

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

    In 1582, Pope Gregory XIII stepped in to fine-tune things, establishing the eponymous Gregorian calendar. Under this new system, leap years would be skipped in the first year of every century ...

  6. Huh? How Often Do We Have Leap Years, Exactly? - AOL

    www.aol.com/huh-often-leap-years-exactly...

    According to Air and Space, we skip a leap year when the year it would normally fall on is divisible by 100 but not divisible by 400. The last time leap year was skipped was in the year 2000 and ...

  7. Leap year 2024: Why we get February 29 this year, and ... - AOL

    www.aol.com/leap-2024-why-february-29-172505741.html

    The year 2000 was a leap year, for example, but the years 1700, 1800, and 1900 were not. The next time a leap year will be skipped is the year 2100," read an article from the Smithsonian.

  8. Template:One page calendar - Wikipedia

    en.wikipedia.org/wiki/Template:One_page_calendar

    Calendar for year with 1 January on a Monday ... Template documentation ... {One page calendar|year=2024|caption=Leap year}}

  9. Is 2024 a leap year? And just why do we have an extra day ...

    www.aol.com/2024-leap-just-why-extra-194033159.html

    Every four years we get an extra day in February and it happens to fall in 2024. Here's why we have leap days built into our calendar.

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