Chine Calendar
2007 is the Year of the Pig (boar)，It is also known by its former name of Ding Hai.
Chine calendar
Chine calendar has been in continuous u for centuries, which predates the International Calendar (bad on the Gregorian Calendar 格里历/阳历) we u at the prent day which goes back only some 425 years. The calendar measures time, from short durations of minutes and hours, to intervals of time measured in months, years and centuries, entirely bad on the astronomical obrvations of the movement of the Sun, Moon and stars.
网赚骗子
What's a calendar?
A calendar is a system for measuring time, from hours and minutes, to months and days, and finally to years and centuries. The terms of hour, day, month, year and century are all units of time measurements of a calendar system.
How does one measure time?
Distance can be measured with a stick. Time is measured by obrving the movements of the sun, moon and stars. People in all major cultures have since discovered this fact since pre-historical time.
What's a 'Day?'
为什么会抽筋
Every one knows about 小褥子the rotation of the Earth about its axis, which caus (apparent) movement of the Sun from East to West across the sky. So we define one cycle of movement of the Sun as one 'Day.' The Chine word小腿肌肉图 is very straight forward and calls one day as one 'Sun.'
What's a 'Week?'
The concept of a "week" is less important in the Chine calendar.
The ancient Egyptians had a ten-day week, and so did the Chine. The ancient Assyrian
s 亚述人 invented the ven-day week, and the names of days of the week that we u even today are bad on a system of assigning the five planets visible to the naked eye, the sun, and the moon to the ven days of the week.
道字成语What's a 'Month?'
For this we look at the Moon! Each night, the appearance of the Moon changes. From 'new moon' to 'full moon' and back. So we define a 'Month' as the time it takes for the Moon to go through one cycle of motion. As it happens, this takes about 29.5 days. So we round the month to be either 29 days or 30 days. Again, in the Chine language a month is simply a 'Moon.' 关于舞蹈的诗句The English word "month" is derived from the word "moon."
What about a 'Year?'
The next larger unit of measurement of time is the 'Year.' For this we go back to the Sun again. Careful obrvations reveal that the over a period of many months (12), the position of the Sun shifts from very high overhead to a much lower point at Noon time. Th
e length of daylight time also changes from longer to shorter. Even more importantly, the weather changes from hot to cold, giving ri to the four asons of Winter, Spring, Summer and Fall.
It is logical, therefore, to define the length of this time period as a 'Year.'
The Chine word for 'Year' is 'Nian'. Since the word 'Sun' has already assigned the meaning of a 'day', a new word has to be ud to denote the 'year.'
How long is a year?
A little more than 365 days. In 104 B.C. the length of a year was determined to an accuracy of 365.2502 days郑簠. By 480 A.D., Ju Chongzhi refined it to 365.2428 days, or 52 conds more than the modern value of 365.2422 days. To put it another way, in 2,000 years the total discrepancy 差异 is less than one day! Together with the voluminous 大量的 annals 记录of Chine historians, the Chine has provided the most accurate and uninterrupted time-line records.
Although 0.24 day does not look like much, over many years it becomes significant. How do we round it to a whole number of days? There are veral different schemes to do this. The Chine scheme is called the 'lunar calendar', and the nearly standard calendar is called the 'solar' calendar system.
Chine Lunar Calendar
A normal year has 12 lunar months, with the length of lunar month defined above.
In order to make up to 365.24 days, an extra month is added during the Leap Year 闰年.
Solar or Western Calendar
In the Solar Calendar system, a normal year has 365 days. Every 4-th year, an extra day is added in February to make up to 365.25 days. This is called the Leap Year. Each year still has 12 months, but the number of days in each month vary illogically, so the start of each month does not coincide with the pha of the New Moon at all.
大浪漫主义Decades, Century, Millennium vs Great Year, Cycle and Epoch
For historical discussions of long periods, longer units of time are handy.
In the Western calendar terminology:
Decade = 10 years
Century = 100 years
Millennium = 1,000 years
For example, 2006 is in the Third Millennium, 21-th Century, first decade and 6-th year.
