Vedic Birth Chart (jyotiṣa, rāśi cakra)

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Positions from Swiss Ephemeris; rāśi/bhāva/nakṣatra/daśā rules cited by verse against the project wiki (BJ = Bṛhajjātaka, BPHS = Bṛhat Parāśara Horā Śāstra). · Runs entirely in your browser -- birth data never leaves your device.

Birth data

Birth date (civil calendar)

Birth time (local clock time)

Birth place

Latitude (degrees, north positive)

Longitude (degrees, east positive)

Only connects to OpenStreetMap once you press this -- nothing loads until then.

Time zone (IANA name) A modern UTC offset applied to a historical birth is the single most common source of a wholly wrong chart -- this list resolves the offset actually in force on the birth date, not today's offset. Picking a place on the map can suggest a zone, but never silently applies one.

Chart settings Ayanāṃśa (sidereal offset) Rāhu/Ketu node House system (rāśi → bhāva) Daśā system Daśā year length

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The chart is wider than a phone screen -- swipe to see all of it, or switch to "Report" (which wraps).

Fill in the birth data on the left and press "Cast chart".

Builds one self-contained prompt for any LLM: verified positions, sign/house/nakṣatra placements and the Vimśottarī daśā sequence, plus the open questions this domain does not settle, the provenance grade of each rule used, and an explicit list of what this engine does not compute. Generated on this device only -- nothing is sent to any server.

About this site: rules are cited by verse against the project wiki (Bṛhajjātaka and Bṛhat Parāśara Horā Śāstra); three things the classical texts do not decide -- ayanāṃśa, house division, diagram layout -- are exposed above as explicit settings rather than silent defaults, and every generated report/prompt restates them.

Privacy: this page runs the Python engine directly in your browser via Pyodide. Birth data lives only in your device's memory while the page is open -- it is never uploaded, never written to a server, never logged. The only network requests this page makes are for the Pyodide runtime and this site's own vendored files (engine, Swiss Ephemeris data, map library); OpenStreetMap tiles and search are requested only after you explicitly open the map picker.

Limits: this is the D1 (rāśi) chart only. Aspects (dṛṣṭi), planetary dignity, divisional charts (ṣoḍaśavarga), yoga, aṣṭakavarga and longevity (āyurdāya) are not computed -- see the LLM prompt export for the full list. This is a research and self-exploration tool, not a medical or financial one.