Tibetan calendar content is astronomical calculation of Tibetan calendar.

Astronomical calendars are widely used in the real life of Tibetan people, such as timing, making calendars, and determining directions. Its content is not only to explore the laws of celestial movement and natural change, but also to explore the close relationship between the diagnosis and treatment of diseases and seasonal climate change (learners have a tradition of learning medical arithmetic, and Tibet Astronomical Calendar Institute is still under the leadership of Tibetan Hospital). Another important content of Tibetan calendar is weather forecast. In ancient times, Tibetans invented many weather forecasting methods, such as observing the colors and shapes of plants, animals, rivers, stars, ice beds and clouds, and judging the weather changes. Through the observation and analysis of the weather conditions during Fox Day, Bird Day, Positive Day, Jackal Day, 2nd-2nd Day, Indoor Wall Day and White Glue Day, combined with the pictures of lions, turtles and five-star sports, the weather conditions in the coming year are predicted, such as snow disaster, hail, frost dew, drought and flood, earthquake and other natural disasters. According to the seasonal activities of wild ducks, cuckoos, Dai Sheng birds, geese, crows, swallows and other migratory birds, arrange early, middle and late sowing in Tibet. This method is still widely used in rural pastoral areas.

In addition, the Tibetan calendar also includes the Five Elements, Tanabata, Eight Diagrams, Jiugong, Zodiac, Twenty-four Solar Terms, 60th Anniversary, Spring Cattle, Solar Terms, Life, Feng Shui and so on.