Part of Death
For daytime births it is calculated by adding the positions of the ascendant and Mars and subtracting that of Saturn. For nighttime births Saturn is added to the ascendant and the position of Mars is subtracted from the total.
The part of death shows the point in the horoscope at which deep processes of transformation take place, which are often accompanied by intense feelings of anxiety. Because of ethical and accuracy concerns about predicting death, the part of death plays virtually no practical role in modern astrology.