 one of the mismatched conjunction days. The sexagenary name of this conjunction day was changed from gu&#464; m&#462;o to ji&#462; ch&#233;n. Ji&#462; ch&#233;n is one of the names of the <i>b&#249;</i> cycles listed in the paper. Unlike the <i>s&#236;f&#275;n</i> system, however, a <i>b&#249;</i> cycle is a cycle for the time of lunar conjunction returning to its starting value, not a cycle in which both the conjunction and a solar term returning to their original values. Using the <i>b&#249;</i> cycle 36