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.
Coronavirus: Death toll rises to 2,788 in China
Pang Xinghuo, deputy head of Beijing Centre of Disease Control, told a news briefing on Thursday that it was a cluster case. On Wednesday, cases were detected for the first time in Brazil, Pakistan, Norway, Greece, Romania and Algeria.
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.
Un sondage YouGov , relayé par BFMTV , révèle que la popularité de la Corona est en chute libre aux États-Unis. BFMTV raconte que ce n'est pas la première fois qu'une marque est associée à une maladie.
Italy is the country outside of Asia with the most confirmed cases of coronavirus - at least 655 - and 17 people have died. Bahrain reporting three new cases - all Bahraini women returning from Iran - pushing the total to 36.
An ambulance leaves Yokohama Port where the Diamond Princess , back, is docked in Yokohama, near Tokyo, Friday, Feb. 14, 2020. England's chief medical officer has warned it is "just a matter of time" until coronavirus spreads in the UK.
Ce blocage intervient après que la Grèce a décidé vendredi matin de renforcer ses patrouilles à la frontière avec la Turquie . Déclenchée en mars 2011 par la répression de manifestations pacifiques, la guerre en Syrie a fait plus de 380.000 morts.
But this week , when confirmed cases shot up on two continents, experts warned that the world was not ready for a major outbreak. The CDC said that the "reportedly did not have relevant travel history or exposure to another known patient with COVID-19".
Some countries are reacting to the surge in infection cases in South Korea by imposing restrictions on entry by South Koreans. A 61-year-old man in Sao Paulo, Brazil, who had recently visited Italy, is Latin America's first confirmed patient.
Four people who were aboard the ship have died from the virus, which has been declared an global public health emergency. Nigeria on Friday announced the first confirmed case of the novel coronavirus in sub-Saharan Africa, AFP reported.
Les autorités affirment que le patient est stable, sans symptômes graves, et qu'il est traité dans un hôpital de Lagos. Tous les regards se tournent vers l'Italie, où le coronavirus a déjà contaminé 650 personnes , dont 17 mortellement.
The World Health Organization (WHO) said China had reported 412 new cases on Tuesday, while there were 459 in 37 other countries. Tedros told reporters that Iran , Italy and South Korea were at a "decisive point" in efforts to prevent a wider outbreak.
Less than two years later the Duke and Duchess of Sussex announced they were stepping down from royal duties and moving to Canada. Additionally, the trio will no longer be considered Internationally Protected Persons as they are revoking their diplomat status.
The Italian had traveled on Turkish Airlines to Istanbul and then to Lagos, according to health authorities. The World Health Organization later praised Nigeria for its "world-class epidemiological detective work".
Efforts to trace those exposed to coronavirus patient
It is unclear how symptomatic the infected woman was on the plane and whether she was coughing and sneezing during the flight. While the World Health Organisation has said that the outbreak has reached a "decisive point" and has "pandemic potential".
WHO says virus at 'decisive point' as world battles spread
The WHO says the outbreak in China peaked around February 2, after measures that included isolating its epicentre Hubei province. Iranian authorities also announced domestic travel restrictions for people with confirmed or suspected cases of the coronavirus.