What does "except the sun" mean in the auspicious calendar?

Except day, it refers to the last day of a year in the summer calendar.

This is the time to divide the old year with firecrackers.

In the past, it was an auspicious day in the zodiac. Chapters 5 and 5 of "Jing Hua Yuan": "You must choose the almanac' except the day', decoct medicine, and bathe children ... ten times a year; Or in May, June and July, it is better to check and wash on the 10 th. "

The last day of December in the lunar calendar. Song Meng's Dream of Tokyo New Year's Eve: "Except for the Japanese, there is a big Nuo ceremony in the Forbidden City. The royal official class directly wears masks, embroiders colorful clothes and holds the golden gun and dragon flag." "History of the Song Dynasty Five Elements": "Every year except the sun, Hanlin is ordered to write peach symbols for poems, and Zheng Dan is placed around the bedroom door." "Surprise at the Second Moment" Volume 24: "Get up early in the morning and sit at home until the end of the day."