ian calendar was Nov. 24, 203 BCE and the sexagenary day was w&#249; w&#468;. From Table 6, we can determine that Z10 fell on the 25th day in month 10 in the Han calendar. Since Z10 was in month 10, its lunation fraction can be directly computed using <span class="nowrap">J<sub>10</sub></span>.<br />
Lunation fraction of Z10 = (JD<sub>Z10</sub> - J<sub>10</sub>)/(29 + 499/940) = 182383/222072 &approx; 15.6/19.</p>
    
<p>The summer solstice (Z5) was half of solar cycle after the winter solstice. Hence,<br 