t. 21, 191 BCE and its sexagenary day cycle was b&#464;ng x&#363;. This was the beginning of a <i>b&#249;</i> cycle. Like the <i>s&#236;f&#275;n</i> system, a <i>b&#249;</i> cycle may be named after the sexagenary name of its first day. The problem is that the name b&#464;ng x&#363; is not one of the names listed in the paper. A <i>b&#249;</i> cycle in this system is 29&times;1249+663=36884 days. Since 36884&times;3=9221&times;12, the branch name of the <i>b&#249;</i> cycle repeats every 3 cycles. If x&#363