GetBirthChart is a web-based birth chart calculation and interpretation platform. It calculates planetary positions, houses, angles, and aspects from birth data first, then uses AI to explain how those chart factors interact. It also includes Big Three, Moon and Rising signs, compatibility, synastry, and yearly forecasts. If an exact birth time is unknown, time-dependent results such as the Ascendant and houses are omitted instead of guessed.

I built GetBirthChart around a simple principle: calculate the chart first, interpret it second. The chart data is computed first, then AI helps explain how placements, houses, and aspects interact. I also open-sourced the core calculation engine as gbc-astro so the calculation layer can be inspected independently. I’d love feedback on the product experience and how clearly the chart results are presented.

I built GetBirthChart around a simple principle: calculate the chart first, interpret it second. The chart data is computed first, then AI helps explain how placements, houses, and aspects interact. I also open-sourced the core calculation engine as gbc-astro so the calculation layer can be inspected independently. I’d love feedback on the product experience and how clearly the chart results are presented.
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