Insight into the Leap Year
Worried that your Mac or PC won't know it's leap year? No need to panic. Check the calendar on your computer. There it is: February 29, 2008 ...
It was the ancient Egyptians who first figured out that the solar year and the man-made calendar year didn't always match up.
That's because it actually takes the Earth a little longer than a year to travel around the Sun — 365 days, 5 hours, 48 minutes, and 46 seconds, to be exact.
Therefore, as the hours accumulated over the centures, an extra day was occasionally added to the calendar, and over time the practice became more or less official.
It was the Romans who first designated February 29 as leap day. Later, a more precise formula (still in use today) was adopted in the 16th century when the Gregorian calendar fine-tuned the calculations to include a leap day in years only divisible by four, i.e., 2008, 2012.
Another stipulation ruled that no year divisible by 100 would have a leap year, except if it was divisible by 400. Thus, 1900 was not a leap year ... but 2000 was! Go figure.
Thankfully, all this intricate plotting will continue to keep us in tune with the seasons over the next several thousand years.
Born on a Leap day?
According to astrologers, those born under the sign of Pisces on February 29 have unusual talents and personalities reflecting their special status.
Most have to wait every four years to "officially" observe their birthdays, but leap year babies typically choose either February 28 or March 1 to celebrate in years that aren't leap years.
Some Famous People Born on February 29
Born 1976 - Ja Rule, rapper
Born 1972 - Anthonio Sabato Jr., model & actor
Born 1916 - Dinah Shore, singer
Born 1904 - Jimmy Dorsey, bandleader.
Born 1792 - Gioacchino Rossini, Italian opera composer
Leap Day Traditions - No Man is Safe
While leap day helped official timekeepers, it also resulted in social customs turned upside down when February 29 became a "no man's land" without legal jurisdiction.
As the story goes, the tradition of women romantically pursuing men in leap years began in 5th century Ireland, when St. Bridget complained to St. Patrick about the fair sex having to wait for men to propose. Patrick finally relented and set February 29 aside as the day set aside allowing women the right to ask for a man's hand in marriage.
The tradition continued in Scotland, when Queen Margaret declared in 1288 that on February 29 a woman had the right to pop the question to any man she fancied. Menfolk who refused were faced with a fine in the form of a kiss, a silk dress, or a pair of gloves given to the rejected lady fair.
A similar modern American tradition, Sadie Hawkins Day, honors "the homeliest gal in the hills" created by Al Capp in the cartoon strip Li'l Abner. In the famous story line, Sadie and every other woman in town were allowed on that day to pursue and catch the most eligible bachelors in Dogpatch. Although the comic strip placed Sadie Hawkins Day in November, today it has become almost synonymous with February 29.
___________________________________
Why do we need leap year?
The Gregorian calendar, which now serves as the standard calendar for civil use throughout the world, has both common years and leap years. A common year has 365 days and a leap year 366 days, with the extra, or intercalary, day designated as February 29. A leap year occurs every four years to help synchronize the calendar year with the solar year, or the length of time it takes the earth to complete its orbit about the sun, which is about 365¼ days.
The length of the solar year, however, is slightly less than 365¼ days—by about 11 minutes. To compensate for this discrepancy, the leap year is omitted three times every four hundred years.
In other words, a century year cannot be a leap year unless it is divisible by 400. Thus 1700, 1800, and 1900 were not leap years, but 1600, 2000, and 2400 are leap years.
What are your chances of being born on leap day?
About 1 in 1500.
How many people were born on leap day?
There are about 187,000 people in the US and 4 million people in the world who were born on Leap Day.
The rules for determining a leap year
Most years that can be divided evenly by 4 are leap years.
Exception: Century years are NOT leap years UNLESS they can be evenly divided by 400.
When did leap year originate?
The Gregorian calendar is closely based on the Julian calendar, which was introduced by Julius Caesar in 45 BC. The Julian calendar featured a 12-month, 365-day year, with an intercalary day inserted every fourth year at the end of February to make an average year of 365.25 days. But because the length of the solar year is actually 365.242216 days, the Julian year was too long by .0078 days (11 minutes 14 seconds).
This may not seem like a lot, but over the course of centuries it added up, until in the 16th century, the vernal equinox was falling around March 11 instead of March 21. In 1582, Pope Gregory XIII adjusted the calendar by moving the date ahead by 11 days and by instituting the exception to the rule for leap years. This new rule, whereby a century year is a leap year only if divisible by 400, is the sole feature that distinguishes the Gregorian calendar from the Julian calendar.
Following the Gregorian reform, the average length of the year was 365.2425 days, an even closer approximation to the solar year. At this rate, it will take more than 3,000 years for the Gregorian calendar to gain one extra day in error. - Ann Marie Imbornoni
It was the ancient Egyptians who first figured out that the solar year and the man-made calendar year didn't always match up.
That's because it actually takes the Earth a little longer than a year to travel around the Sun — 365 days, 5 hours, 48 minutes, and 46 seconds, to be exact.
Therefore, as the hours accumulated over the centures, an extra day was occasionally added to the calendar, and over time the practice became more or less official.
It was the Romans who first designated February 29 as leap day. Later, a more precise formula (still in use today) was adopted in the 16th century when the Gregorian calendar fine-tuned the calculations to include a leap day in years only divisible by four, i.e., 2008, 2012.
Another stipulation ruled that no year divisible by 100 would have a leap year, except if it was divisible by 400. Thus, 1900 was not a leap year ... but 2000 was! Go figure.
Thankfully, all this intricate plotting will continue to keep us in tune with the seasons over the next several thousand years.
Born on a Leap day?
According to astrologers, those born under the sign of Pisces on February 29 have unusual talents and personalities reflecting their special status.
Most have to wait every four years to "officially" observe their birthdays, but leap year babies typically choose either February 28 or March 1 to celebrate in years that aren't leap years.
Some Famous People Born on February 29
Born 1976 - Ja Rule, rapper
Born 1972 - Anthonio Sabato Jr., model & actor
Born 1916 - Dinah Shore, singer
Born 1904 - Jimmy Dorsey, bandleader.
Born 1792 - Gioacchino Rossini, Italian opera composer
Leap Day Traditions - No Man is Safe
While leap day helped official timekeepers, it also resulted in social customs turned upside down when February 29 became a "no man's land" without legal jurisdiction.
As the story goes, the tradition of women romantically pursuing men in leap years began in 5th century Ireland, when St. Bridget complained to St. Patrick about the fair sex having to wait for men to propose. Patrick finally relented and set February 29 aside as the day set aside allowing women the right to ask for a man's hand in marriage.
The tradition continued in Scotland, when Queen Margaret declared in 1288 that on February 29 a woman had the right to pop the question to any man she fancied. Menfolk who refused were faced with a fine in the form of a kiss, a silk dress, or a pair of gloves given to the rejected lady fair.
A similar modern American tradition, Sadie Hawkins Day, honors "the homeliest gal in the hills" created by Al Capp in the cartoon strip Li'l Abner. In the famous story line, Sadie and every other woman in town were allowed on that day to pursue and catch the most eligible bachelors in Dogpatch. Although the comic strip placed Sadie Hawkins Day in November, today it has become almost synonymous with February 29.
___________________________________
Why do we need leap year?
The Gregorian calendar, which now serves as the standard calendar for civil use throughout the world, has both common years and leap years. A common year has 365 days and a leap year 366 days, with the extra, or intercalary, day designated as February 29. A leap year occurs every four years to help synchronize the calendar year with the solar year, or the length of time it takes the earth to complete its orbit about the sun, which is about 365¼ days.
The length of the solar year, however, is slightly less than 365¼ days—by about 11 minutes. To compensate for this discrepancy, the leap year is omitted three times every four hundred years.
In other words, a century year cannot be a leap year unless it is divisible by 400. Thus 1700, 1800, and 1900 were not leap years, but 1600, 2000, and 2400 are leap years.
What are your chances of being born on leap day?
About 1 in 1500.
How many people were born on leap day?
There are about 187,000 people in the US and 4 million people in the world who were born on Leap Day.
The rules for determining a leap year
Most years that can be divided evenly by 4 are leap years.
Exception: Century years are NOT leap years UNLESS they can be evenly divided by 400.
When did leap year originate?
The Gregorian calendar is closely based on the Julian calendar, which was introduced by Julius Caesar in 45 BC. The Julian calendar featured a 12-month, 365-day year, with an intercalary day inserted every fourth year at the end of February to make an average year of 365.25 days. But because the length of the solar year is actually 365.242216 days, the Julian year was too long by .0078 days (11 minutes 14 seconds).
This may not seem like a lot, but over the course of centuries it added up, until in the 16th century, the vernal equinox was falling around March 11 instead of March 21. In 1582, Pope Gregory XIII adjusted the calendar by moving the date ahead by 11 days and by instituting the exception to the rule for leap years. This new rule, whereby a century year is a leap year only if divisible by 400, is the sole feature that distinguishes the Gregorian calendar from the Julian calendar.
Following the Gregorian reform, the average length of the year was 365.2425 days, an even closer approximation to the solar year. At this rate, it will take more than 3,000 years for the Gregorian calendar to gain one extra day in error. - Ann Marie Imbornoni
Total Comments 3
Comments
 |  Why and when we have leap years2008 is a leap year, which means that it has 366 days instead of the usual 365 days that an ordinary year has. An extra day is added in a leap year—February 29—which is called an intercalary day or a leap day. Why is a Leap Year Necessary? Leap years are added to the calendar to keep it working properly. The 365 days of the annual calendar are meant to match up with the solar year. A solar year is the time it takes the Earth to complete its orbit around the Sun—about one year. But the actual time it takes for the Earth to travel around the Sun is in fact a little longer than that—about 365¼ days (365 days, 5 hours, 48 minutes, and 46 seconds, to be precise). So the calendar and the solar year don't completely match—the calendar year is a touch shorter than the solar year. It may not seem like much of a difference, but after a few years those extra quarter days in the solar year begin to add up. After four years, for example, the four extra quarter days would make the calendar fall behind the solar year by about a day. Over the course of a century, the difference between the solar year and the calendar year would become 25 days! Instead of summer beginning in June, for example, it wouldn't start until nearly a month later, in July. As every kid looking forward to summer vacation knows—calendar or no calendar—that's way too late! So every four years a leap day is added to the calendar to allow it to catch up to the solar year. A Quick History Lesson The Egyptians were the first to come up with the idea of adding a leap day once every four years to keep the calendar in sync with the solar year. Later, the Romans adopted this solution for their calendar, and they became the first to designate February 29 as the leap day. But Wait! It's Not Quite that Simple! The math seems to work out beautifully when you add an extra day to the calendar every four years to compensate for the extra quarter of a day in the solar year. As we said earlier, however, the solar year is just about 365 ¼ days long—but not exactly! The exact length of a solar year is actually 11 minutes and 14 seconds less than 365 ¼ days. That means that even if you add a leap day every four years, the calendar would still overshoot the solar year by a little bit—11 minutes and 14 seconds per year. These minutes and seconds really start to add up: after 128 years, the calendar would gain an entire extra day. So, the leap year rule, "add a leap year every four years" was a good rule, but not good enough! Calendar Correction, Part II To rectify the situation, the creators of our calendar (the Gregorian calendar, introduced in 1582) decided to omit leap years three times every four hundred years. This would shorten the calendar every so often and rid it of the annual excess of 11 minutes and 14 seconds. So in addition to the rule that a leap year occurs every four years, a new rule was added: a century year is not a leap year unless it is evenly divisible by 400. This rule manages to eliminate three leap years every few hundred years. It's Smooth Sailing for the Next 3,300 Years This ingenious correction worked beautifully in bringing the calendar and the solar year in harmony, pretty much eliminating those pesky extra 11 minutes and 14 seconds. Now the calendar year and the solar year are just about a half a minute off. At that rate, it takes 3,300 years for the calendar year and solar year to diverge by a day. - Borgna Brunner |
Posted 29-02-2008 at 08:30 PM by TIME  |
| | Leap Year Facts and HistoryHere are some interesting facts about the history of Leap Years. - Source
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| Posted 29-02-2008 at 08:47 PM by TIME |
| | I lived in England for a long time, & every Leap year specially on any happy occasion (Parties etc.) one hears quite often, a shout saying: "Girls don't be shy, It is a Leap Year" & of course it make them quite bold. What a fun I have been missing. Having said that, a few weeks ago I met a Uygur family from your XinJiang Province, here in Canada. after getting to know them, & wached their cultural DVD's, I became very interested. I wish if I could possibly communicate with some nice Uygur people through Xenomed.com. It's a Leap Year after all. (rain_drop@ezsurf.ca) By the way, I would like to post something in future on the Chinese Medicine based on Meridian system, which has been further developed into EFT. Now one does not need to bother to diagnose or to guess. |
| Posted 06-03-2008 at 10:09 PM by Rainbow7 |
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