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   What is a leap year?

   • You may know that every four years February gets an extra day and we have what’s called a “leap year”. But how are leap years calculated and who worked it out?

   What exactly is a leap year and why is it important?

   warwick.ac.uk/newsandevents/knowledgecentre/science/physics-astrophysics/leap_years/

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   How many days are in a leap year?

   • That is a leap year. In an ordinary year, if you were to count all the days in a calendar from January to December, you’d count 365 days. But approximately every four years, February has 29 days instead of 28. So, there are 366 days in the year. This is called a leap year. Why do we have leap years?

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

   spaceplace.nasa.gov/leap-year/en/

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   Why are leap years so important?

   • So not only are leap years the result of millennia of mathematical work, they are also the consequence of rulers imposing their will on people’s day to day lives, and the gradual understanding of our place in the universe.

   Explainer: the science behind leap years and how they work

   theconversation.com/explainer-the-science-behind-leap-years-and-how-they-work-54788

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   What is a leap day?

   • And that vital extra day, a leap day, is (partly) what keeps our calendars in working order. As users of a solar calendar, we rely on the sun to tell us how long a year is and when each of the four seasons begins. It was devised to match our farming habits and as a reliable – and visible – guide to the passing of time.

   Explainer: the science behind leap years and how they work

   theconversation.com/explainer-the-science-behind-leap-years-and-how-they-work-54788

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2. spaceplace.nasa.gov › leap-year › enWhat Is a Leap Year? | NASA Space Place – NASA Science for Kids

   spaceplace.nasa.gov › leap-year › en

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   Sep 17, 2024 · 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 the missing partial day, we add one day to our calendar approximately every four years. That is a leap year.

3. www.sciencefocus.com › science › leap-year-explainedLeap year 2024: Why do we have leap years? | BBC Science Focus

   www.sciencefocus.com › science › leap-year-explained

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   Here’s everything you need to know about leap years, according to scientists. What is a leap year? Why do they happen and how often?

4. Videos

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     SCIENCE BEHIND: Why do we have Leap Year?

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     Why Do We Have LEAP YEARS? | What Is A LEAP YEAR? | The Dr Binocs Show | Peekaboo Kidz

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     What is the Leap Year Rule?

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5. warwick.ac.uk › physics-astrophysics › leap_yearsWhat exactly is a leap year and why is it important?

   warwick.ac.uk › physics-astrophysics › leap_years

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   You may know that every four years February gets an extra day and we have what’s called a “leap year”. But how are leap years calculated and who worked it out? The answers lie in astronomy and early agriculture with a little help from Julius Caesar and Pope Gregory XIII, explains Dr James McCormac, an expert in astrophysics from the ...

6. theconversation.com › explainer-the-science-behindExplainer: the science behind leap years and how they work

   theconversation.com › explainer-the-science-behind

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   Feb 23, 2016 · But as a very specific measure, one year, better described as a tropical year, is defined as the time between one spring equinox and the next being 365 days, five hours, 48 minutes and 45 seconds.

7. airandspace.si.edu › editorial › science-leap-yearThe Science of Leap Year - National Air and Space Museum

   airandspace.si.edu › editorial › science-leap-year

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   Feb 27, 2020 · Almost everyone is familiar with the concept of leap year, but the reasoning behind it is a little complicated. Museum geologist Bob Craddock explores leap years in this new blog.

8. www.britannica.com › science › leap-year-calendarLeap year | Leap Day, Gregorian Calendar, Intercalary Year

   www.britannica.com › science › leap-year-calendar

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   Aug 20, 2024 · leap year, year containing some intercalary period, especially a Gregorian year having a 29th day of February instead of the standard 28 days. The astronomical year, the time taken for the Earth to complete its orbit around the Sun, is about 365.242 days, or, to a first approximation, 365.25 days.

9. www.vox.com › science › 24080989Leap year 2024: Why do we have leap years? | Vox

   www.vox.com › science › 24080989

   Feb 26, 2024 · Yes, 2024 is a leap year, which is usually momentous, and not just for the people born on February 29 who only get to celebrate their actual birthdate every four years.