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A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year. The 366th day (or 13th month) is added to keep the calendar year synchronised with the astronomical year or seasonal year . [ 1 ]
The Short Answer: It takes approximately 365.25 days for Earth to orbit the Sun — a solar year. We usually round the days in a calendar year to 365. To make up for the missing partial day, we add one day to our calendar approximately every four years. That is a leap year.
Simply put, a leap year is a year with an extra day—February 29—added nearly every four years to the calendar year. Why Are Leap Years Necessary? Read Next.
1. : a year in the Gregorian calendar containing 366 days with February 29 as the extra day. 2. : an intercalary year in any calendar. Examples of leap year in a Sentence.
Leap years are years with 366 calendar days instead of the normal 365. They happen every fourth year in the Gregorian calendar — the calendar used by the majority of the world.
The word leap in leap year refers to the figurative “leap” forward of a day that occurs during it because of the extra day. During non-leap years (known as common years), each day of the year moves forward one day of the week because a year is 52 weeks and one day long.
What is a leap year, and when is the next one? Find out if 2024 is a leap year, how they are calculated, and why we use them.
Leap year, year containing some intercalary period, especially a Gregorian year having a 29th day of February instead of the standard 28 days. The astronomical year, the time taken for the Earth to complete its orbit around the Sun, is about 365.242 days, or, to a first approximation, 365.25 days.
Here’s everything you need to know about leap years, according to scientists. What is a leap year? Why do they happen and how often?
How to know if it is a Leap Year: Leap Years are any year that can be exactly divided by 4 (such as 2020, 2024, 2028, etc) except if it can be exactly divided by 100, then it isn't (such as 2100, 2200, etc)