How to calculate the rooster day of each month in the lunar calendar
"Yang Gong banned Japan", also known as "Thirteen Bannings in Yang Gong", was handed down by Yang Junsong, a geomantic master in the Tang Dynasty. These thirteen "taboo days" are 1 month 13, February 1 day, March 9, April 7, May 5, June 3, July1day, July 29, and July 29.