Katarchic astrology is the application of horoscopic astrology to determine an auspicious moment to begin a venture or undertaking, otherwise known as electional astrology, as well as to interpret the auspiciousness of an inception that has already taken place. The latter application is more commonly referred to as inceptional astrology in modern times, although in the Hellenistic and Byzantine traditions the term katarch? was used to refer to both electional astrology as well as what modern astrologers refer to as inceptional astrology.
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