 solar terms is the same as in the Zhuanxu calendar, which is described on the <a href="guliuli.html#computation">ancient six calendars page</a>. Here I only list the formulae. According to equation (4) and Table 2 on the <a href="guliuli.html#computation">ancient six calendars page</a>, the Julian day of the winter solstice closest to year y is given by<br />
JD(W(y)) = 1721050.5 + 19/32 + y&middot;P<sub>s</sub> &nbsp;&nbsp;&nbsp;&nbsp;(1)<br />
where P<sub>s</sub> = 365.25 is the number of days in a solar