It uses the tropical zodiac, which is aligned to the equinoctial points p.tl/nn-K src:wiki

Calendrical systems used to predict seasonal shifts p.tl/nn-K src:wiki

The Solar House & The Equal House was added to ‘horoscope STAFF’.itunes.apple.com/en/app/id44105… #astrology #horoscope

The input of ‘horoscope JIKU'(iPhone) became convenient. itunes.apple.com/en/app/id43015… #astrology #horoscope

p.tl/nn-K