Did you know that you share your birthday with about 180,000 British people, 860,000 Americans and 3.7 million Chinese?
If you were born on February 29, you share your birthday with 0.068% of the population. In Britian, that would be around 45,00 people.
The least common birthday date in both the UK and USA (apart from February 29) is December 25th. This drop in births on both Christmas Day and Boxing Day is thought to be linked to hospital arrangements over the Christmas period.
Records show that for the past two decades September 26 emerges as the most common birthday for people born in England and Wales.
Still in England and Wales, eight of the top ten dates of birth are at the end of September, with the remaining two falling at the start of October.
After being introduced by Danny DeVito, Catherine Zeta-Jones and actor Michael Douglas discovered that they share the same birthday on the 25th of September, although 25 years apart.
Famous people born on Christmas Day include Isaac Newton, Humphrey Bogart, Kenny Everett, Sissy Spacek, Annie Lennox, Joaquín 'El Chapo' Guzman, Shane MacGowan, Dido, Justin Trudeau, and cricketer Alastair Cook.
In many East Asian countries, the day a baby is born is considered to be the first birthday and the second birthday is celebrated at the age of one.
Both the lyrics and the music of the song 'Happy Birthday' are in public domain. The copyright expired in the Europe on January 1, 2017 (70 years after the death of the composer).
The song 'Good Morning to All' provided the melody of 'Happy Birthday to You'. Although disputed, it is generally accepted that American sisters Patty and Mildred J. Hill composed the tune in 1893.
Marilyn Monroe famously sang 'Happy Birthday, Mr. President' on May 19, 1962, for President John F. Kennedy at a celebration 10 days before his 45th birthday.
The tradition of celebrating a person’s birthday with a cake and lit candles originated in 18th century Germany.
The Queen sends cards to her Commonwealth subjects celebrating their 100th and 105th birthday (and every year thereafter).
Jewish boys have a bar mitzvah on reaching their 13th birthday. Jewish girls have a bat mitzvah on their 12th birthday (or their 13th according to Reform Jews).
Families in North America often give a 'sweet sixteen' celebration to mark a girl's 16th birthday.
In Japan, turning 20 years of age is celebrated with a 'Coming of Age Day'.
The Queen's Official Birthday is celebrated on the second Saturday of June with the ceremony of the 'Trooping of the Colour'. However, her actual birthday is on the 21st of April. Two birthdays? It's a tradition that was started by George II in 1748 and it owes its origins to the British weather.
On 1st March 2013, Justin Bieber tweeted saying 'Worst birthday ever'. The tweet quickly went viral, becoming at the time the third-most Tweeted message ever!
Martin Luther King, Jr. Day is a federal holiday in the USA that marks the birthday of Martin Luther King, Jr. It's celebrated on the third Monday of January each year; King's birthday is actually January 15th.
In North Korea, birthdays are not celebrated on July 8 and December 17 because these are the dates of the deaths of Kim Il-sung and Kim Jong-il. More than 100,000 North Koreans celebrate birthdays on July 9 or December 18 instead of their real birthdays to avoid these dates.
The Romans celebrated birthdays with hedonistic parties and generous gifts.
Presidents' Day, is a federal holiday in the USA that celebrates the birthday of George Washington. The holiday is observed annually on the third Monday of February, although Washington's actual birthday is on February 22 (in the modern calendar).
Superman's birthday is on February 29th. However, Clark Kent celebrates his birthday on the the date the Kents found him, which was June 18th.
In the Northern Hemisphere all racehorses born in the same year have their official birthday as the 1st January.