Foundations
Were you born by day or by night?
Sect is one of the oldest distinctions in astrology and rests on a single question: was the Sun above the horizon when you were born, or below it? Above gives a day chart, below a night chart.
The whole distinction sits on where the Sun fell relative to the horizon line — the axis running from your Ascendant to your Descendant. Everything above that line was in the visible sky at your birth; everything below it was under your feet.
Hellenistic astrologers sorted the planets into two teams. In a day chart the Sun, Jupiter, and Saturn are in their preferred condition; in a night chart the Moon, Venus, and Mars are. The same placement was read more gently or more harshly depending on sect — the earliest form of context-sensitive interpretation.
Knowing whether the Sun was up requires knowing where the horizon was, and that requires the time and place of birth. Without them, sect cannot be determined honestly.
Cosmic Color Co's relational engine detects sect for both charts in a comparison. A day chart meeting a night chart is a different conversation than two of a kind, and sect is one of the ancient anchors behind the lineage and mentorship readings.