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

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

    Check your calendars, California. We get an extra day this month. Whether you’ve realized it or not, 2024 is a leap year.Every four years (typically), a leap year occurs in February — making ...

  4. 2024 is a leap year, but why? Here’s the science behind the ...

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

    A year may be a leap year if it is evenly divisible by 4. 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 ...

  5. 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.

  6. Solar cycle (calendar) - Wikipedia

    en.wikipedia.org/wiki/Solar_cycle_(calendar)

    The solar cycle is a 28-year cycle of the Julian calendar, and 400-year cycle of the Gregorian calendar with respect to the week. It occurs because leap years occur every 4 years, typically observed by adding a day to the month of February, making it February 29th. There are 7 possible days to start a leap year, making a 28-year sequence. [1]

  7. File:Gregoriancalendarleap solstice.svg - Wikipedia

    en.wikipedia.org/wiki/File:Gregoriancalendarleap...

    This 4-year cycle is clearly visible in the graph. To compensate for the largest part of the remainder of the difference, there is no leap year in 1800, 1900, 2100, 2200, as can be clearly seen in the graph, too.

  8. Google Doodle celebrates leap year - AOL

    www.aol.com/news/google-doodle-celebrates-leap...

    Google Doodle is celebrating Leap Day on 29 February - a date that only comes around every four years to keep our calendars in line with the Earth and the Sun.. The artwork for this doodle depicts ...

  9. List of environmental dates - Wikipedia

    en.wikipedia.org/wiki/List_of_environmental_dates

    International year of natural fibres 2010 International year of biodiversity 2011 International year of forest 2012 International year of cooperative (Also celebrated as National year of horticulture) 2013 International year of water cooperation 2014 International year of family farming 2015 International year of soil and Light 2016