Details of Tibetan Astrology 6: New Year and Seasons

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Mongolian or Tibetan Months and New Year      

Chinggis Khan, the grandfather of Khubilai Khan, had already adopted from the Uighurs, at the beginning of the 13th century, the 12-animal count for years and made it standard for his empire. According to one account, Chinggis Khan is the one who introduced the term “Mongolian months” (hor-zla), which corresponded to and were a substitute designation for the Chinese ones, on the occasion of his conquest in 1207 CE of the Tangut kingdom known as Kharakhota in Mongolian, Minyag (Mi-nyag) in Tibetan and Xixia in Chinese, in the general region of western Gansu and western present-day Inner Mongolia. 

When the Tibetan calendar was introduced to the Mongol Empire in the middle of that same century, the first Mongolian month was kept as the start of the year, in keeping with the Chinese custom, even though it is two months earlier than the first Kalachakra month. This was adapted in Tibet as well, so that there was uniformity concerning the beginning of the year throughout the Mongol Empire. In Tibet, the Mongolian months were alternatively referred to as Tibetan months (bod-zla), and even today the two designations are used interchangeably. 

The first Kalachakra month, then, corresponds to the third Mongolian month, so that at present even though the Tibetan new year begins on the first Mongolian month and is called the beginning of the new “prominent” year, the actual starting point used in the calendar calculations is not until two months later. Chinese and Tibetan New Years, however, still do not always coincide. This is because each of these calendar systems has its own mathematical formula for adding leap-months (zla-zhol), and determining the start and length of each month, which will be discussed a little later.

The Mongolian months are called by their numbers, first month, second and so on, as are the Chinese months. The Kalachakra months, on the other hand, are named, like their Hindu counterparts, after the lunar constellation in which the full moon occurs. The first Kalachakra month, then, is called Spica, or literally the “Black One” (nag-pa), “Chaitra” in Sanskrit, the name of a constellation near Libra at the opposition to Aries. The name of the month as the Black One has nothing to do, then, with inauspiciousness.

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