natalchart

A natal chart, also known as a birth chart, is a map of the sky at the exact moment of a person’s birth. It shows the positions of the Sun, Moon, and planets in the twelve zodiac signs and in the twelve astrological houses, along with the Ascendant or rising sign. The chart is used in astrology to describe personality traits, life themes, and potential tendencies.

Construction and format: To build a natal chart, one needs the date, time, and place of birth. The time and place determine the Ascendant and the cusps of the houses, while time zone and daylight saving adjustments ensure accuracy. Positions are calculated as the planets’ ecliptic longitudes and mapped into signs and houses. Different house systems, such as Placidus or Whole Sign, yield variations in how houses are arranged.

Key components: Common elements include the Sun, Moon, and planets (traditionally Mercury through Pluto, with some traditions incorporating other points like Chiron or the lunar nodes). The chart may also include points such as the Part of Fortune. Aspects describe angles between planets (e.g., conjunctions, oppositions, squares, trines, sextiles) and are interpreted as indicators of relationships and dynamics. The twelve houses represent life areas such as self, values, communication, family, creativity, health, work, relationships, and spirituality.

Interpretation and use: Astrologers interpret placements of planets in signs and houses, the strength of the Ascendant ruler, and major aspects to outline personality tendencies, motivations, opportunities, and challenges. Predictive techniques involve transits (current planetary movements to natal placements), progressions, and returns (solar or lunar). A natal chart is viewed as a symbolic framework rather than a deterministic forecast.

Limitations: Natal astrology faces methodological criticism and is not supported by empirical evidence. It remains a longstanding, diverse practice with varying schools of interpretation.