《明译天文书》：
“若一星在命宫前，离安命度数五度以下，属命宫。五度以上，不属命宫，属第十二宫。其余宫分，一体推之。此取用之法，前贤多曾体验如此。”
此即末五度原则：距离下一宫宫头5°以内，按落入下一宫算，如果在5°开外，则仍落在本宫，非常重要的原则。
实践中不少占星师认为末3°原则区分行星落宫更加准确，但我们建议仍然按照末五度原则来使用。
5 Degree Offset Rule
A planet within 5° of an angular house is regarded as angular. Therefore, if you have a planet in the 12th house, 9th house, 6th house, or the 3rd house, within 5° of the cusp of the angular house following, then it is to be regarded as angular in strength.
任一距离角宫5°以内的行星均被视为落入角宫。因此，如果某一行星位于第12宫、第9宫、第6宫或第3宫距离角宫5°的位置，则这一行星在力量上被视为落入角宫。
A planet within 5° of a succedent house is to be regarded as succedent. Therefore, a planet in the 7th house within 5° of the 8th house would be regarded as succedent. A planet in the 10th within 5° of the 11th house would be considered as succedent. A planet in the 1st within 5° of the 2nd house would be considered as succedent, and so too, a planet in the 4th house within 5° of the 5th house would be considered as succedent. Likewise a planet within 5° of a cadent house is already cadent.
某一行星距离续宫5°以内被视为落入续宫。因此，如果某一行星位于距离第8宫5°的第7宫，则被视为落入续宫。某一行星距离第11宫5°的第10宫，则被视为落入续宫。某一行星距离第2宫5°的第1宫，则被视为落入续宫，某一行星距离第5宫5°的第4宫，则被视为落入续宫。果宫同样如此。
整宫制是否适用末五度法则？
整宫制星座和宫位是对应的，因此不适用末五度原则。
When looking at the planets’ positions as per Whole Sign Houses, we do not apply the 5-degree rule, which holds that planets within 5 degrees from the cusp of the next house are already active within that house. That kind of delineation is fine for other concerns but in longevity considerations we observe the planets’ positions in the signs.
“当我们依据整宫制观察行星位置时不采用末五度原则，末五度原则即距离下一宫头5°以内的行星纳入下一宫。这一解读方法在其他方面都很好，但在寿数计算上，我们观察行星在星座中的位置。”
Tips：如果某个行星根据末五度原则实在看不出来应该落入本宫还是下一宫，建议直接切换到整宫制，按照整宫制落宫来解读。
原来整宫制不看末五度，大家说的穿刺就是末五度原则呗？
是的，整宫制由于星座和宫位一一对应，因此不存在是否视同下一个宫位的问题。