清·李光地 等奉敕撰 · Chapter 183 / 273
旬中空亡
104 characters8 linked terms 旬中空亡者甲子旬中戌亥空甲戌旬中申酉空甲申旬中午未空甲午旬中辰巳空甲辰旬中寅卯空甲寅旬中子丑空
按十日为旬以十干配十二支自甲至癸而止余二辰天干不及故为空亡也如甲子起至癸酉止不及戌亥故甲子旬十日皆以戌亥为空余仿此
The text above is reproduced verbatim from the source: no translation, summary or rewriting.