Everything you need to know about Leap Day

29 Février, 2020, 02:44 | Auteur: Anatole Charbonneau

We asked Google Search for the answers.

That's why we add an extra day to the calendar nearly every four years - so that we stay in sync with the seasons.

There usually are only 28 days in the month of February, but every four years an extra day is added. It was Julius Caesar himself who commissioned the calendar's creation, but it produced too many leap years and eventually the calendar became out of sync with set astronomical events like equinoxes and solstices. It takes 365 days, 5 hours, 48 minutes, and 45 seconds for our planet to travel around the sun.

Leap years are named as such because the extra day causes each date on the calendar to jump ahead by two days compared to the last year, rather than one. And wishing people whose birthdays fall on February 29 needs to special, particularly when it is also their leap year birthday.

According to Daniel Brown, associate professor in the School of Science and Technology at Nottingham Trent University, if we didn't observe Leap Years, then in around 750 years' time, the coldest time of the year would fall in June.

There isn't an exact amount because they only occur every four years and there are 10 years in a decade.

How is a leap year calculated?

This rule about years divisible by 100 years and 400 years was added with the introduction of the Gregorian calendar in 1582. Iran, for example, doesn't.

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Technically the manual says "The years 1600, 2000 and 2400 are leap years, while 1700, 1800, 1900, 2100, 2200 and 2300 are not leap years".

(Getty Images/iStockphoto)Why is it called a leap year?

What are the biggest leap year traditions?

In France, since 1980, a satirical newspaper entitled La Bougie du Sapeur is published only on leap year, on February 29.

Supposedly, a 1288 law by Queen Margaret of Scotland (then age five and living in Norway), required that fines be levied if a marriage proposal was refused by the man; compensation was deemed to be a pair of leather gloves, a single rose, £1 and a kiss.

Leap year and leap day come with some unique traditions, as well.

Some families can even end up with multiple leaplings in the mix, like the Henriksen family from Andenes, Norway, who have three siblings born on February 29: Heidi, born in 1960, Olav, born in 1964, and Leif-Martin, born in 1968.

They hold the official record for the most children born in one family on leap day. To put it another way, if an impending leap year is evenly divisible by 100, we skip it, unless that year is also evenly divisible by 400.

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