Tibetan calendar

The Tibetan calendar, or the Tibetan lunar calendar is a calendar based on 12 or 13 phases of the moon, which starts with a new moon, or when the moon is completely dark. A lunar month is added every 2 or 3 years to equal the solar year.
The Tibetan New Years celebration is called Losar. According to almanacs, or yearly calendar with important dates, the year starts with the third Hor month, or the Third Mongolian month.
Every month, certain dates in the calendar are used for Buddhist practices. Similarly, certain months also have importance.
Years.
Years in the Tibetan calendar are similar to the Chinese zodiac, with animals signifying each year. The animals go as follows:
There are also elements. Each element goes as follows:
Each elements is associated with two years. First as male, and second as female. For example, a male Earth-Dragon year is followed by a female Earth-Snake year, then by a male Iron-Horse year.
During the time of the Tibetan Empire (7th – 9th century), Tibetan months were named according to the four seasons:
Since the 12th century, the months were named from the 12 animals in the Chinese zodiac:
With the introduction of the calendar of the "Kalacakratantra" in the second half of the 11th century, months were also named by lunar mansions. Within that, a full moon took place each month:
In the second half of the 13th century, a system was introduced of counting the month by ordinal numbers, also called the Hor month: