What does taboo mean on the calendar, and what does it mean to be appropriate?

Taboos on the calendar refer to things that should not be done on that day, and appropriateness refers to things that are suitable for that day.

Taboo mainly appears in the yellow calendar of the calendar. In the modern Gregorian calendar, the main contents are: solar calendar, lunar calendar, dry calendar, and good or ill luck, evil, harmony, singing, dry branch, twenty-four solar terms, twelve gods, this day, fetal god, Peng Zu taboo, six obsidians, nine planets, fleeting time, tradition, three yuan and nine luck, and so on.

Extended data:

China's traditional calendar is based on heavenly stems and earthly branches's arrangement, combination and circulation, which means circulation and reappearance. It is this "recurrence" that makes it meaningful to choose a date to avoid it.

The fundamental basis for the ancients to formulate calendars and determine auspicious days is the sun, the moon and the stars. Among them, the stars are the most critical factor in determining the date, and the Gregorian calendar basically does not consider these, so there is no so-called taboo.