What do you mean by a fixed date?

This word means a specific time or a specific holiday.

1. In ancient Chinese, a fixed date can also indicate a certain date and time. Hanshu: "Twelve Laws, Six for Yang and Six for Land ... Everyone has his own date." Yan Shigu's Note: "Set the date as the day of Jiazi."

2. In Tibetan calendar, fixed dates can also refer to some specific festivals and celebration days. The fourth day of April in the Tibetan calendar is the Sagadawa Festival in Tibet, which means "full moon". This festival is not only of religious significance, but also the beginning of the Tibetan New Year.