# Why Do We Need Leap Years?

Leap years are necessary for keeping our calendars in alignment with the Earth's revolutions around the sun. The Earth takes approximately 365 days, 5 hours, 48 minutes and 46 seconds to circle around the sun once in a tropical year. It would therefore mean that the Gregorian calendar would be off by approximately 24 days after 100 years as it only has 365 days in a year.
Q&A Related to "Why Do We Need Leap Years"
 The earth revolves around the sun in 365 days, 5 hrs and 48 minutes, so every four years we add and extra day to the calender i.e the 29th of February. This is done to sync time and http://answers.ask.com/Holidays/Society/why_do_we_...
 I explained Leap Year and Leap Day in this post titled "Leap Day http://www.quora.com/Why-do-we-have-a-leap-year
 First you must ask yourself what is a day. Is it.24 hours? The time it takes the Earth to spin once completely? Well, bothe of these would wrong. Technically, a day is the time it http://wiki.answers.com/Q/Why_do_we_need_leap_year...
 1. Divide the year for which you are trying to determine a leap year by four. If the year is not divisible by four, it is not a leap year. If the year is divisible by four, continue http://www.ehow.com/how_7546950_calculate-leap-yea...
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Leap year is so called because hundreds of years back the leap year day had no recognition and it was 'leapt over' and ignored, thus the name 'leap year.' Leap ...
Leap year is a term used to describe a year that has an additional day for the purpose of keeping the year in synchrony with the astronomical year. Leap years ...
Leap years happen to keep our calendar in alignment with the Earth's revolutions around the sun. To know if a year is a leap year it should be evenly divisible ...
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