Calculate the 24 divisions of the solar year

The 24 divisions of the solar yearDateDay of week
小寒 (Shoukan) January 6Fri.
大寒 (Daikan) January 20Fri.
立春 (Risshun) February 4Sat.
雨水 (Usui) February 19Sun.
啓蟄 (Keichitsu) March 6Mon.
春分 (Shunbun) March 21Tues.
清明 (Seimei) April 5Wed.
穀雨 (Kokuu) April 20Thurs.
立夏 (Rikka) May 6Sat.
小満 (Shouman) May 21Sun.
芒種 (Boushu) June 6Tues.
夏至 (Geshi) June 21Wed.
小暑 (Shousho) July 7Fri.
大暑 (Taisho) July 23Sun.
立秋 (Risshuu) August 8Tues.
処暑 (Shosho) August 23Wed.
白露 (Hakuro) September 8Fri.
秋分 (Shuubun) September 23Sat.
寒露 (Kanro) October 8Sun.
霜降 (Soukou) October 24Tues.
立冬 (Rittou) November 8Wed.
小雪 (Shousetsu) November 22Wed.
大雪 (Taisetsu) December 7Thurs.
冬至 (Touji) December 22Fri.