ar is based on the <i>s&#236;f&#275;n</i> system with the epoch at the time when the lunar conjunction and the solar term Z9 were assumed to both occur at midnight on Oct. 27, 607 BCE. Intercalation was determined by the requirement that the solar term Z10 was always in month 10 (solar term labels are given on our <a href="solarTerms.html">solar terms page</a>). The conjunction dates associated with all months in <span class="nowrap">N<sub>-245</sub></span> &ndash; <span class="nowrap">N<sub>-206</sub></spa