New Yue Wei, Xin Wei

Tiangan Jiaxu Year and Jihai Year, during Xiao Shu's autumn, are the new Yue Wei:

……

1974 from light summer in July to beginning of autumn in August

1979 beginning of autumn from July to August.

1984 from light summer in July to beginning of autumn in August

1989 beginning of autumn from July to August.

1994 from light summer in July to beginning of autumn in August.

1999 from light summer in July to beginning of autumn in August

Beginning of autumn, July-August 2004.

……

Calendars are not commonly used, but calendars are mostly used for numerology. Therefore, it is based on the solar term month, not the new moon, which is different from the Gregorian calendar year based on the lunar year.