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• 24 solar terms and 72 pentads.　2Sekki Usui　 4-6Ko

  2022/02/19

• 24 solar terms and 72 pentads.　1Sekki Risshun　 1-3 Ko

  2022/02/03

• 卵を立てるのは立春の日？春分の日？

  2022/02/01