Koch (birthplace) cusps: the ascendants at the sidereal times when the
midheaven degree has run a third and two thirds of its diurnal semi-arc,
before and after culmination. Returns null inside the polar circle, where
that semi-arc is undefined for part of the ecliptic.
Koch (birthplace) cusps: the ascendants at the sidereal times when the midheaven degree has run a third and two thirds of its diurnal semi-arc, before and after culmination. Returns
nullinside the polar circle, where that semi-arc is undefined for part of the ecliptic.