Acknowledgements

Planet positions are calculated astronomically and converted to the sidereal (Vedic) zodiac with the Lahiri (Chitrapaksha) ayanamsa, the standard of the Indian national calendar and most Panchangs. Rahu and Ketu use the mean node by default; you can switch to the true node in any chart.

Charts, dashas, yogas and doshas follow Brihat Parashara Hora Shastra and Phaladeepika; Guna Milan and muhurats follow the traditional tables of electional astrology, as described in the Library.

Town and city names and coordinates come from GeoNames, licensed under Creative Commons Attribution 4.0.

Region names come from the Countries States Cities Database, made available under the Open Database Licence (ODbL).

Historical time zones and daylight saving rules come from the IANA time zone database built into your browser. Finding a place’s time zone uses tz-lookup, whose boundary data is © OpenStreetMap contributors and available under the Open Database Licence (ODbL).