Natal Atlas

Calculate tropical planets, Ascendant, Midheaven, equal houses, retrogrades and major aspects from an entered time and place.

Cosmic Blueprint · working astronomical chart engine

Your sky, calculated from time and place.

Enter local birth time, UTC offset and coordinates to calculate tropical planetary longitudes, Ascendant, Midheaven, equal houses, retrogrades and major aspects. Nothing entered here is stored.

Natal calculationOne-moment positionsTwo-chart aspectsTwo-place comparisonNo return searchNo map export

Private calculationNot stored

Birth dateLocal birth time

Birth place name for your reference only

LatitudeLongitude

UTC offset at birth

Use coordinates from a trusted map and the historical UTC offset that applied on the birth date. A wrong offset can materially change the Ascendant and houses.

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Chart canvas ready

Your first calculated chart will appear here.

WHAT IT CALCULATES

Positions are data. Meaning is a lens.

Planetary positions, angles and aspects come from a deterministic engine. Interpretive text is original and framed as reflection—not scientific proof, diagnosis or guaranteed prediction.

PRIVACY

Birth details are not stored here.

This public calculator processes the submitted values for the result and does not save them. A future Vault save requires email sign-in and explicit consent.

ACCURACY

Time zone history matters.

Use the historical UTC offset that applied at the event. Unknown or rounded times can materially change the Ascendant and houses.