A leap year is a year in which an extra day is added to the calendar in order to synchronize it with the seasons. Since the tropical year is 365.242190 days long, a leap year must be added roughly once every four years (four times the fractional day gives ). In a leap year, the extra day (known as a leap day) is added at the end of February, giving it 29 instead of the usual 28 days.
four except for years which are both divisible by 100 and not divisible by 400. Therefore, the year 2000 will be a leap year, but the years 1700, 1800, and 1900 were not. The complete list of leap years in the first half of the 21st century is therefore 2000, 2004, 2008, 2012, 2016, 2020, 2024, 2028, 2032, 2036, 2040, 2044, and 2048.
The extra rule involving centuries is an additional correction to make up for the fact that one extra day every four years is slightly too much correction (). This scheme results in the vernal equinox gradually shifting its date between March 19 and 21, being shifted once every leap year, and then being abruptly shifted in non-leap centuries (see figure above).
In the Gregorian calendar, 97 years out of every 400 are leap years, giving the total number of days in 400 years as
The leap year was introduced in the Julian calendar in 46 BC. However, around 10 BC, it was found that the priests in charge of computing the calendar had been adding leap years every three years instead of the four decreed by Caesar (Vardi 1991, p. 239). As a result of this error, no more leap years were added until 8 AD. Leap years were therefore 45 BC, 42 BC, 39 BC, 36 BC, 33 BC, 30 BC, 27 BC, 24 BC, 21 BC, 18 BC, 15 BC, 12 BC, 9 BC, 8 AD, 12 AD, and every fourth year thereafter (Tøndering), until the Gregorian calendar was introduced (resulting in skipping three out of every four centuries). The UNIX command cal incorrectly lists 4 AD as a leap year (Vardi 1991).
When someone is born on a leap year they have 1 birthday every 4 years
2007-02-27 19:24:01
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answer #1
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answered by PaIgE c 1
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The same thing if you were born on Feb 28th (like me, YEAH!).
But more people says "You were born on the 29th! COOL!! So are you like 4 years old or something!"
People say to me all the time "You were born on Feb 28th! Well that was close! Almost born on the 29th!" and I reply "Oh yeah, really close. If I was born a whole year minus a day I would of been born on the 29th!"
The Stig
2007-02-27 19:26:01
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answer #2
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answered by The Stig 3
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You will have a birthday celebration only once in every 4 years because most of February has only 28 days.It will have 29 days if the year can be divided by 4.
2007-02-27 19:45:28
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answer #3
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answered by ? 7
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Well you should age a lot less than most every one else. That's the good news. The bad news is, you have to go to school 4 years longer in order to graduate from high school.
Nothing like living a turtle's life.
2007-02-27 19:34:05
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answer #4
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answered by Uncle Remus 54 7
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You only celebrate your birthday once every four years, except if you officially change or register it to be February 28th or March 1st.
2007-02-27 19:26:23
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answer #5
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answered by ira a 4
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u can celebrate yr birthday on 28 feb or 1st march
heck u can have two birthdays in the year
2007-02-27 19:50:51
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answer #6
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answered by Anonymous
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your bday is Feb 28 by default and youre still a Pisces
2007-02-27 19:29:41
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answer #7
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answered by smilingontime 6
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You are sacrificed to the calendar gods.
2007-02-27 19:23:05
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answer #8
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answered by Anonymous
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a flying pig will come and eat your finger nails
2007-02-27 19:23:06
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answer #9
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answered by egg 4
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it means you are 4x younger than everyone else
2007-02-27 19:24:04
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answer #10
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answered by Four Eyes 2
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