leap year

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leap year:

see calendarcalendar
[Lat., from Kalends], system of reckoning time for the practical purpose of recording past events and calculating dates for future plans. The calendar is based on noting ordinary and easily observable natural events, the cycle of the sun through the seasons with equinox
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.

leap year

A year that contains one more day than the usual calendar year so that the average length of the year is brought closer to the tropical year of 365.2422 days or to the lunar year. In the Julian calendar a leap year of 366 days occurred once every four years when the year was divisible by four. In the Gregorian calendar this rule was modified so that century years are leap years only when they are divisible by 400. The additional day is now added at the end of February (Feb. 29).

leap year

[′lēp ‚yir]
(astronomy)
A year with 366, and not 365, days.

leap year

a calendar year of 366 days, February 29 (leap day) being the additional day, that occurs every four years (those whose number is divisible by four) except for century years whose number is not divisible by 400. It offsets the difference between the length of the solar year (365.2422 days) and the calendar year of 365 days
References in periodicals archive ?
Before that, Sunderland were involved in a dramatic Leap Year Day game against Manchester United in an epic FA Cup quarterfinal in 1964.
In Abu Dhabi, Burjeel Hospital welcomed leap year baby Khalifa Mohammad Al Hammadi, who was delivered by Caesarean section at 8am.
A leap year proposal is a traditional story that most learn as children.
He coined the term "leap year" and declared that a year that is divisible by 100, but not by 400, is not a leap year.
She said: "She'll have her birthday on the 28th and then have two every Leap Year. Her dad Anthon suggested that.
So staff at Crow Lane Primary and Foundation Stage School were amazed to discover two leap year babies in the same class.
29 birthday appear once every four years, Christopher said the best thing about being a leap year baby is telling people that he is one and seeing their reaction.
After due consideration and haggling, the two agreed that on the additional day in a Leap Year a woman could make a marriage proposal.
LEAP Years are needed to keep our calendar in alignment with the Earth's revolutions around the Sun.
Not only does the hearts and flowers fest of Valentine's Day arrive on the 14th but this being a Leap Year there'll be love struck ladies all over Merseyside considering whether to propose to their partners on the 29th instead of waiting for them to get down on one knee.
For in addition to the chronograph and also the perpetual calendar, it now has a large format date and month shown in digital form, plus a digital display of the four yearly leap year cycle.
This means that 1984 and 2000 were leap years but not 1900.