Show HN: CLI for Vedic Astrological Charts (local calculations)

A developer released kundali, an open-source local Vedic astrology (Jyotish) engine and command-line tool that computes birth charts on the user's own machine using the Swiss Ephemeris, so birth data never leaves the device. The tool covers planet positions, divisional charts D1 through D60, the Bhav Chalit, Vimshottari dasha down to the prana level, Ashtakavarga, Shadbala and bhavabala, Jaimini chara karakas, and transits including Sade Sati, and it is also packaged as a SKILL.md agent skill for Claude Code and other agents that read skills. It is licensed AGPL-3.0 because the Swiss Ephemeris via pyswisseph is AGPL-3.0, uses GeoNames cities1000 place data under CC BY 4.0, and requires uv to run.

A local Vedic astrology Jyotish engine and CLI. It computes the chart on your machine with the Swiss Ephemeris. Birth data never leaves the machine. New to Vedic astrology? This is a free command-line tool that draws your birth chart in Vedic traditional Indian astrology, which places the planets against the actual star constellations, about 24° back from the Western zodiac, so your "sun sign" often shifts one sign earlier, and it does all the math on your own computer, so your birth details never go to a website. It's also packaged as an agent skill SKILL.md for Claude Code and other agents that read skills. - Planet positions, D1 and every divisional chart D2 to D60, plus the Bhav Chalit - Planet and house tables: dignity, relationship, aspects, combustion - Upagrahas sub-planets such as Gulika - Birth panchang - Vimshottari dasha down to the prana level - Classical yogas, with their cancellation bhanga rules - Ashtakavarga - Shadbala and bhavabala planet and house strength - Jaimini chara karakas, karakamsha and devatas - Transits gochara , Sade Sati, ingresses and stations Two modes: - Classical the default : true local sidereal time, BPHS ashtakavarga tables, classical Chesta bala and yogas. - --drik : reproduces drikpanchang.com https://www.drikpanchang.com 's output, quirks included. During development the numbers were checked cell by cell against Drik, using made-up charts only. SKILL.md has the accuracy table and the conventions that were reverse-engineered. Needs uv https://docs.astral.sh/uv/ . kundali.py is a uv script, so pyswisseph installs itself on first run. git clone https://github.com/dhruvkar/kundali ~/.claude/skills/kundali or anywhere ln -s ~/.claude/skills/kundali/kundali.py ~/.local/bin/kundali The first place lookup downloads the GeoNames cities1000 dump about 11 MB into ~/.cache/kundali/ . To skip it, pass --lat/--lon/--tz instead of a place name. kundali city springfield list matching places an ambiguous name is never guessed kundali chart 2000-01-01 12:00 "Chennai" positions + D1 + D9 kundali chart 2000-01-01 12:00 1264527 --div d10 --json kundali dasha 2000-01-01 12:00 "Chennai" --running kundali yogas 2000-01-01 12:00 "Chennai" --explain kundali transits 2000-01-01 12:00 "Chennai" --months 12 kundali shadbala|bhavabala|ashtakavarga|jaimini|panchang <date <time <place Every command takes --json , --drik and --ayanamsha . The ayanamsha choices are chitra-paksha Lahiri, the default , bv-ramana , krishnamurthi-paddhati and tropical . for t in test .py; do uv run --quiet --with pyswisseph python3 $t || echo "FAIL $t"; done test snapshot.py runs every command on three made-up charts and compares the results with snapshots/ . After an intended change, regenerate them with --update and review the diff. AGPL-3.0, because the Swiss Ephemeris via pyswisseph is AGPL-3.0, or commercially licensed by Astrodienst https://www.astro.com/swisseph/ . Place data comes from GeoNames https://www.geonames.org/ under CC BY 4.0.