When did the first month start?

The fifth, eighth, eleventh, twelfth, twentieth, twenty-first and twenty-fourth day of the first month.

There are seven auspicious days in the first month of 2023, namely the fifth day of the first month, the eighth day of the first month, the eleventh day of the first month, the twelfth day of the first month, the twentieth day of the first month, the twenty-first day of the first month and the twenty-fourth day of the first month.

The first month is the month of "building rights". In the era of observing the image, bucket handle belongs to Yin, and Zheng Chun's month is the first month. The establishment of the calendar was originally the concept of establishing the calendar in December. It has also been used to refer to the first month of other calendars. Now usually refers to the first month of the lunar calendar.