</sub> = JD<sub>10</sub> + 29 + 499/940 = 1673567.5 + 592/940,<br />
lunation fraction of Z11 = (JD<sub>Z11</sub> - JD<sub>11</sub>)/(29 + 499/940) = 1163/74024 &approx; 0.3/19.<br />
I used fractions in the above calculations for convenience of showing the values of <i>xi&#462;oy&#250;</i>. All calendar calculations on this website use decimals, which is explained in the <a href="guliuli.html#decimals">last section</a> on the ancient six calendars page. The last formula on that page shows a convenient way 