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Leap Day, February 29, 2016

’Leap Day’ is February 29, which is an extra (intercalary) day added during a Leap Year, making the year 366 days long – and not 365 days, like a common (normal) year. Nearly every 4 years is a Leap Year in our modern Gregorian Calendar.

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What is a Leap Year and when is the next one?

Leap Day February 29, 2016

Traditions and folklore

Leap Day as a concept has existed for more than 2000 years, and is still associated with age-old traditions, folklore and superstition. One of the most popular traditions, is that women propose to their boyfriends.

Leap Day Traditions and Superstitions
Leap Day Trivia

Brief history of the Leap Day

Leap Years are needed to keep our calendar in alignment with the Earth's revolutions around the sun. It takes the Earth approximately 365.242199 days (a tropical year) to circle once around the Sun. If we didn't add a day on February 29 nearly every 4 years, we would lose almost six hours every year. After only 100 years, our calendar would be off by approximately 24 days!

Leap Years 2008 – 2032

YearFebruary 29 – day of the week
2008Friday
2012Wednesday
2016Monday
2020Saturday
2024Thursday
2028Tuesday
2032Sunday

The ancient Roman Calendar added an extra month every few years to maintain the correct seasonal changes.

But Julius Caesar implemented a new calendar – the Julian Calendar – in 45 BCE (Before Common Era) with an extra day added every 4 years. At the time, Leap Day was February 24, because February was the last month of the year.

What's a Leap Second?

February 30 was a real date

Too many Leap Years

In 1582 Pope Gregory XIII refined the Julian calendar with a new rule that a century year is not a Leap Year unless it is evenly divisible by 400. This transition to the Gregorian Calendar was observed in some countries including Italy, Poland, Portugal, and Spain. The transition took longer for other countries; Great Britain started using the Gregorian Calendar in 1752 and Lithuania in 1915.

Leap Year in other calendars

Topics: Leap Year, Calendar, February

In this Article

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Leap Day Library

  1. Customs & traditions
  2. Famous Birthdays
  3. February 30, 1712

Leap day 29 February



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