A lunisolar calendar which identifies years, months, and days according to astronomical phenomena.

Days begin and end at midnight, and months begin on the day of the new moon. Years start on the second (or third) new moon after the winter solstice.

Holidays

• The Dragon Boat Festival falls on Wǔyuè 5th (5th day of the fifth month).
• Double Ninth Festival falls on Jiǔyuè 9th (9th day of the ninth month).
• Lantern Festival falls on Zhēngyuè 15th (15th day of the first month).
• Qixi falls on Qīyuè 7th (7th day of the seventh month).

气歌 (solar term)

"Solar terms" is a twenty-four period lunisolar calendar which stays synchronized with the seasons and has been crucial for agrarian societies.