The chances of being born on a leap day are one in 1,461.
Struggle to remember when it's a leap year? Well, the Summer Olympics - this year in Rio de Janeiro - are always held in a leap year.
'Leaplings' or 'leapers' were the names given to anybody born on a leap year, and although they can celebrate their birthdays on the preceding or following day. Some people decide to say they age one year, every leap year - so a twelve year old would only be three years old.
One tradition, disputed by the National Archives of Scotland, states that Queen Margaret of Scotland invented the awkward February 29 proposal trap. This gives women the chance to propose to a man instead of the traditional other way round.
The women must wear breeches (old-fashioned trousers) or a scarlet waistcoat to propose. If the man doesn't accept, he is fined a kiss, a silk gown, or twelve pairs of gloves, which can cover a naked ring finger. Which would you choose?
Leap years are very traditional, having been invented by Julius Caesar over 2,000 years ago. The Islamic leap year happens eleven times in a 30-year cycle, while the Hindu leap year has an extra month and occurs once every three years, or four times in eleven years. The Chinese add a leap month every three years to keep their calendar in line with the rotation of the Earth.
Speaking of adding, February 30 was an actual date in Sweden, 1712. But this year we all had just one extra day – what did you do with yours?
Amina Daifi, 14, Norwich
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