Astronomical calendar

Calendar-testing was one of the key processes of astronomical calendar reforms in ancient China .

验历是中国古代天文历法改革中重要环节之一。

It is the main object of study , including astronomical calendar , hydrometeorology , vision and life grounds on natural disasters .

其研究和录入对象主要包括：天文历法、水文气象、天灾异象及人生性理。

In terms of the astronomical calendar , October in China is beautiful autumn ;

从天文纪年的角度来说，10月在中国是美丽的秋天；

Because of the need of intensive cultivation agriculture , people not merely had concerned the source of water , lands , animals and plants closely , and cared for the relation of the climate , astronomical calendar and farming season very much .

由于精耕细作农业的需要，人们不仅对与农业生产密切相关的水源、土地、动植物资源有着明确的意识，而且对天文历法、季节气候与农时的关系也非常关心。

The three primary structures are the Temple of the Sun , the Room of the Three Windows and the Intihuatana Stone , an astronomical clock or calendar that has been dubbed " The Hitching Point of the Sun . "

它最基本的三大建筑是：太阳神殿、三窗神殿和拴日石。其中拴日石有一个天文时钟或一本日历，它们被授予“太阳要点”的称号。