推计神所在法
太乙金镜式经 · section 4 · 王希明 奉敕撰 · 621 characters
Original text
置积年以纪法六十去之不尽命起寅宫行十二辰筭外即计神所在也
推太岁支合神法 假令太岁在子合神在丑行十二辰十二年一周天矣
推六纪月建法 一纪二甲仲辰甲子甲午二甲仲辰十一月建甲子太乙在一宫武徳为天目计神寅合神丑 二纪二巳孟辰己已巳亥二纪孟辰十一月建甲子太乙在六宫地主为天目计神合神如上同 三纪二甲季辰甲辰甲戌二甲季辰十一月建甲子太乙在一宫大炅为天目计神合神如上同 四纪二巳仲辰已夘已酉二纪仲辰十一月建甲子太乙在六宫武徳为天目计神合神如上同 五纪二甲孟辰甲申甲寅二甲孟辰十一月建甲子太乙在一宫地主为天目计神合神如上同 六纪二巳季辰己丑己未二已季辰十一月建甲子太乙在六宫大炅为天目计神合神如上同 凡三十有六纪 三十年有三百六十个月是以甲子甲午同建太乙天目计神合神用式之法一同岁计之法占騐逆顺其义亦等臣今为李淳风定时计五日六十时法以为月计五年六十个月三十年有三百六十个月若有闰月只以逐月节气时刻为正也
推太乙月计差法 章岁六百五十七 章月八千七百二十六闰差二十秒二十七 周纪法三百六十
置积年所求年以章月乘之 章岁而一为积月不尽为闰余若有余月随数加之
推求闰月 置闰余每月加闰差及秒满法从闰余满章岁则闰月所在或六百三十秒者以上无中气者详之
推太乙月计所在 置积月以周纪法三百六十去之不尽以元法七十二去之又不尽以太乙小周法二十四去之不尽以三约之为宫数不满为入宫月数命起一宫顺行八宫不游中五筭外即月计太乙所在也
推天目所在 置入月纪以天目周法十八去之不尽命起武徳顺行十六神遇隂徳大武重留一筭外即天目所在也
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Witness: https://github.com/garychowcmu/daizhigev20/tree/master/易藏/术数/太乙金镜式经.txt · daizhige/太乙金镜式经.txt · sha c0012983cfc8e304
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