Help Us Perfect the Science of Light
Kalmanas computes Vedic birth charts using classical Parashari methods — planetary positions, dashas, yogas, divisional charts, and more. We need your expert eye to validate accuracy.
How You Can Help
Three simple steps to validate our calculations
Generate a Known Chart
Enter birth details for a chart you've already computed in your trusted software (JHora, Parashara's Light, etc.)
Compare the Results
Check planetary positions, dasha periods, yoga detection, and divisional charts against your reference
Report Any Differences
Click "Report Issue" on the results page. Tell us what differs and which software you're comparing against
What We'd Love You to Verify
Key calculations where your expertise matters most
Planetary Positions
Sidereal longitudes for all 9 grahas with Lahiri ayanamsa (12 ayanamsa options available)
Vimshottari Dasha
Mahadasha → Antardasha → Pratyantar periods with precise start/end dates
100+ Yogas
Detection from six classical texts: Brihat Jataka, Saravali, Hora Sara, BPHS
19 Divisional Charts
Rashi through Shastiamsa (D1–D60) with configurable house systems
Shadbala Strength
Six-fold planetary strength calculation: Sthana, Dig, Kala, Cheshta, Naisargika, Drik
Nakshatras & Panchanga
Lunar mansions, Tithi, Yoga, Karana, and daily Muhurtha scoring
Compare Against Your Trusted Tools
We respect the standards set by established Jyotish software
Questions & Answers
Which ayanamsa does Kalmanas use?
Lahiri (Chitrapaksha) by default, with 12 options including True Pushya, KP, BV Raman, Yukteswar, Fagan-Bradley, and more. You can select your preferred ayanamsa before generating a chart.
Which house system is used?
Equal (Parashari) by default, with 8 options: Sripathi, KP (Krishnamurti), Placidus, Koch, Whole Sign, Campanus, and Regiomontanus.
How are planetary positions calculated?
We use the astronomy-engine library for ephemeris calculations, then apply sidereal corrections. Positions are computed for the birth moment in UTC, converted from local time using the specified timezone offset.
How do I report an inaccuracy?
Generate a chart on the Calculator page, then click the "Report Issue" button (bottom-right corner). Select which section has the issue, describe what your software shows differently, and submit. No login required.
Will my feedback actually be reviewed?
Yes — every submission is reviewed by the developer. Accuracy is our highest priority. If you leave your email, we'll follow up on validated issues.
Ready to Review?
Your expertise helps thousands of people get more accurate readings.