Free · Any harmonic, 1–144

The harmonic chart.

Multiply every planet’s longitude by a harmonic number and wrap it back into the zodiac — the Nth harmonic reveals the chart’s N-fold division of the circle. John Addey’s harmonic technique generalizes what Vedic astrology already does with the Navamsa (9th) and other vargas, applied to a Western tropical chart with any harmonic you choose.

01Birth details

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02Harmonic

Pick a harmonic

Or any harmonic (1–144)

Every planet’s longitude is multiplied by this number and wrapped back into the zodiac — the Nth harmonic reveals the chart’s N-fold division of the circle.

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Which harmonic matters for you?

Every harmonic tells a different story. An advisor can help you pick the ones worth reading closely for your actual questions.

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Computing the sky…

Calculators/Harmonic Chart