Real astronomy and dated history, with sources. Documented traditions and folklore. Modern lunar astrology · symbolic, not predictive.

Houses · Advanced

Porphyry houses

Also called Porphyry

An ancient quadrant system that splits each quadrant of the zodiac into three equal parts; not offered on this site.

It works at all latitudes and was described in late antiquity.

Kind: Calculation, History
Tradition: Hellenistic astrology, Traditional Western astrology
In this site’s birth chart: not used

Swiss Ephemeris documentation (Astrodienst): house systems, nodes and calculation conventions (opens in a new tab) technical

Written for Cool Moon Facts in its own words. An astrology source documents what astrologers believe or practise; it does not establish that astrology works.

All terms · Your birth chart

Tonight's phase needs JavaScript. The phase, the rise and set times and the calendar are all worked out on your device. There is no server doing it for you, which is also why the site has no account. The facts themselves are plain pages and read fine without it — start at Explore.

Porphyry houses

Settings

Gear that makes it better

Where these numbers come from

Porphyry houses

Sources