Ersu calendar is a symbolic representation of the seven luminaries date and auspicious day of the calendar,which is coincide with the the Pleiades ephemeris of Bon.Besides the seven luminaries ates,the rest are selected for Ceremony of weddings, funerals, housing and saling.It is the simplified ersion of the Pleiades Ephemeris.%尔苏日历是一种用符号表示七曜日期和吉凶日子的日历，这种日历与苯教的《昴宿历》一致，除七曜外，其余均为选择办理红白喜事、建房、买卖等日子的符号，是《昴宿星历》的简易版。
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