conjunction is an integer multiples of lunar cycles plus <span class="nowrap">JD(M<sub>0</sub>)</span>, we can use the Julian day of any conjunction to calculate L. We get a different integer part but the fractional part remains unchanged. Take <span class="nowrap">JD<sub>10</sub></span> as an example, we have<br />
L = (JD<sub>Z11</sub> - JD<sub>10</sub>)/29.53085106382979 = 1.015711120717605<br />
lunation fraction of Z11 =  L - floor(L) = 0.0157111220717605 &approx; 0.3/19,<br />
which also agrees with t