Sidereal zodiac (the position of the planets relative to the constellations in the calculation corresponds to the actual position of the planets against the background of the observed constellations — the reference point is located in the firmament, shows our stellar coding in the Earth system - Space, takes into account the precession of the Earth and global cycles)
What is sidereal calculation?
Tropical zodiac ( the position of the planets relative to the constellations in the calculation does not correspond to the actual position of the planets against the background of the observed constellations — the reference point is the position of the Sun on the day of the vernal equinox, shows our coding in the Earth-Sun system, the precession of the Earth and global cycles are not taken into account)- is Considered classic in the Human Design System.