Green Blog

Prior to their adoption of the Western solar calendar system, the Chinese almost exclusively followed their own lunar calendar for working out the times of planting and harvesting and festival holidays. Although people in China today use the Western calendar for almost all business, governmental and practical matters of daily life, the old system still serves as the basis for determining many recurring holidays. This coexistence of two calendar schemes has long been accepted by the people of China.

However, this does not only happen in China, it also happens in most other Eastern countries, like Thailand, and most Arabic countries.

A lunar month is calculated by measuring the period of time needed for the moon to finish its full cycle of 29 and a half days, a standard that makes the lunar year a full 11 days shorter than its solar counterpart. This disparity is made up every 19 years by the addition of seven lunar months.

The 12 lunar months are further divided into 24 solar divisions characterized by the four seasons and times of heat and cold, all of which bear a close relationship to the yearly cycle of agricultural work.

The Chinese calendar - very much like the Hebrew calendar- is a combination of the solar and lunar calendars in that it attempts to have its years coincide with the tropical year and its months coincide with the synodic months. It is not surprising that a few similarities exist between the Chinese and the Hebrew calendar.

For instance, an average year has 12 months, a leap year has 13 months. An ordinary year has 353, 354, or 355 days, a leap year has 383, 384, or 385 days. When working out what a Chinese year will be like, one needs to make a number of astronomical calculations.

First of all, you have to work out the dates for the new moons. In these instances, a new Moon is the completely black Moon (that is to say, when the Moon is in conjunction with the Sun), not the first visible crescent, as is used by the Islamic and Hebrew calendars. The date of a new moon is then the first day of a new month.

The reason why the majority of countries which had their own calendars had to dump them in favour of the Western, Julian calendar that we use today, is business. First the British and then the Americans ran international business and they used the Julian calendar.Anyone who sought to work with them had to follow suit. This is why national policy often varies from local custom in Third World countries.

The government desires to deal on the International markets, but the ordinary family in the country can not. So, the government adopted the Julian calendar but the people only pay lip service to it. I live in Thailand and people here do not even use the 24 hour day divided into two halves. Their day has four sections of six hours each and the first part starts at 6AM, not midnight. Therefore, they have four 4 o’clocks a day, for example but no 7 o’clocks. They are also 543 years ahead of us, although this is more common, for example in Muslim countries.

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Despite the fact that astronomy is the oldest science, it is still at the forefront of not only scientific thought, but also that of the public at large. Who hasn’t looked up at the stars while walking home late at night and wondered about something larger? Having said that though, the ancient people of definitely the northern hemisphere, but probably both hemispheres, knew the movements of the stars and planets better than the majority of us do nowadays.

They understood even then, thousands of years ago, that most stars seem to rise in the Eastern skies at night and travel on circular paths. They also noticed that some ’stars’ were ‘wanderers’ (we call them planets) and that sometimes they travelled ‘against the flow’.

They also named groups of stars that we now call constellations or even galaxies and knew that those visible in the winter were different from those seen in the summer.and that others were visible all year round. The average common man of 5,000 - 10,000 years ago almost certainly knew more about the movement of the celestial bodies than the average common man of today does. (I mean men and women here, naturally).

They learned how to calculate or at least locate the extremities of the sunrise and went to extraordinary lengths to mark those positions with huge stone structures, such as Stonehenge in the UK, probably to facilitate the location of certain positions of the sun or other planets or stars, which may have been vital to their religious beliefs or crop cycles.

In 1609, Galileo invented the first artificial device for studying the stars and planets. It was the first astronomical telescope and through it he was able to see things millions of miles away that no person had ever seen before. Because of the conclusions he came to from his observations, he had trouble with the Roman Catholic Church and was often in serious danger for his life, so radical were his discoveries.

But humankind was not to be put off, and since then we have gone on to construct ever bigger and ever better astronomical telescopes through which we can even detect radio waves, microwaves, X-rays, infrared waves and gamma waves from outer space. Forty years ago, we even travelled to our Moon. and we have sent probes to eight of the nine planets in our Solar System, as well as to quite a few comets and asteroids.

Where are we going next? That decision was always up to the government of the United States and the old Soviet Union, but now there are other players in the field. What will China or India want to explore with their possibly slightly different outlook on life? Or will it be just a question of financial benefit?

The world may be in a state of change and power may be moving from its traditional seats, but it has not lessened interest in questions that scientists think can only be answered in space. These are exciting times in the science of astronomy, but then man has always found astronomy enthralling .

Interested in astronomy, then please pop along to our website at: http://astronomy.the-real-way.com