Много са сложни древните методи, но за сметка на това са изключително точни.
Не знам дали от домова система е разликата, вероятно не, защото когато аз пресмятам, слагам точно системата с която са работили древните. Избирам Alchabitus Semi-Arc (Алкабитус на български?), тропически зодиак, триплицитети Доротей, египетски терми и т.н спазвам всички антични правила уж.
Виж това, много подробно описано стъпка по стъпка, как да пресметнем продължителност на живот на даден натив, от форума на скайскрипт:
Step 1
Understand that length of life is the province of God - God knows best
Step 2
Understand that the methods outline below do not cover catastrophic deaths through humans or nature e.g. massacres, wars, pestilence, natural catastropies (earthquakes, tsunamis, flood, ...). Catastrophic events are not shown in the natal charts. They are shown in mundane chart(s). Many who were born in very different times (and places) die at about the same time in a catastrophic event as mundane is superior to natal.
Step 3
Understand also that the steps outline below do not cover violent deaths. The ancients have different method of extracting charts that have indicators of violent deaths. If the indicators of violent death are present, the timing can be gauged from there (at least not using Alchocoden directly).
For the following steps (Hyleg and Alchocoden) I use Bonatti's method (with some alterations).
Step 4
Check whether the native falls into the first (infant does not take nourishment) or the second differentia (infant takes nourishment but not reared) - see Bonatti (among others).
This is done when parent(s) come for consultation. Obviously an adult would not fall into first or second differentia!
If the native does not fall into first or second differentia, then only we proceed to find the hyleg. (You could use Bonatti's, Ptolemy's, Lilly's, ...). As mentioned above, we would skip step 4 if we are calculating for an adult.
Step 5
Find the hyleg. If the chart has no hyleg, then it automatically falls into third differentia birth (native usually does not pass age 12). If the native does pass age 12, any adverse direction of Asc/ruler of Asc/luminary to malefics (via conjunctions or aspects) are considered dangerous years...
Step 6
If a hyleg is found then the native falls into fourth differentia birth. In Bonatti's scheme, the Alchocoden is found together with the Hyleg. From the Alchocoden and the table of major, middle and minor years, the length of life is calculated. The essential and accidental dignities of the Alchocoden give major, middle or minor years. Benefic aspects (conj., trine, sextile) from benefics to Alchocoden add years, malefic aspects (conj., oppopsition, square) from malefics to Alchocoden reduce years...
Step 7
Once you have obtained the number of years (not an easy task as you probably would come out with more than one hyleg AND Alchocoden), this is the life force given by the chart. The ancients would say that this is the length of life provided you do not get pushed over the cliff or run over by chariots!
Step 8
Check all adverse primary directions (directions via oblique ascensions) of the hyleg to the anaretic degrees. All adverse directions that occur prior to the years given by the Alchocoden are fearful years but should not be lilfe threatening. The adverse directions that occur following the years of the Alchocoden are more worrying...esp. if the Fridaria period confirms it e.g. you have major Fridaria of malefic with minor Fridaria of hyleg after the Alchocoden years. Sometimes the adverse directions can be avoided if powerful benefics also aspecting the hyleg at the same time.
The "anaretic degrees" can be the
1) positions of the malefics (Mars and Saturn)
2) degrees opposite and square the malefics
3) benefics when they are with malefics (especially when they happen be in and/or ruling bad houses i.e. 12th, 8th 6th and sometimes 7th)
4) cauda draconis (south node)
5) malefic fixed stars
6) cusps of certain anti-lilfe houses (e.g. 8th house cusp, sometimes 7th house cusp, 4th house cusp, 6th house cusp) and look also to their rulers
7) parts of death and of killing planet and their rulers
What we look for is probably one or two anaretic degrees that have the greatest testimonies of being anaretic.