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Astrological Houses

The 12 houses divide the sky according to the exact time and place of birth, overlaying the 12 signs to form an individual's birth chart — unlike signs, which depend only on the date. Each house governs an area of life (identity, money, relationships, career). The 12-house system originates in Hellenistic astrology, documented by authors such as Vettius Valens and Dorotheus of Sidon, between the 1st and 2nd centuries CE.

Frequently asked questions

Why do I need my exact birth time to know my houses?
Because houses are calculated from the horizon at the exact time and place of birth — the Earth completes a rotation every 24 hours, so the point rising on the horizon (the Ascendant, the start of the 1st house) changes every few minutes. Without a precise birth time, houses cannot be calculated correctly.
Does every astrological system divide houses the same way?
No. Modern Western astrology commonly uses quadrant systems (such as Placidus, which produces houses of unequal size). Vedic astrology and the older Hellenistic tradition commonly use the Whole Sign system, where each house corresponds to one full 30° sign.