How we compute, check and correct what we publish

Vidhata is a Vedic astrology service on the web and in the Vidhata mobile apps. It is run by SRR Innovation (OPC) Private Limited, a company registered in India. The Vidhata Editorial Team is the company's own team, and articles go out under the team's name because we would rather not invent an author or a credential.

We use AI tools when drafting and translating articles. The dates, times and chart facts in them come from our calculation engine, not from those tools, and where an article relies on a classical text, it is named in the Sources list at the end.

Planet positions come from the Swiss Ephemeris, a widely used astronomical library, through our own calculation engine. We do not copy dates from other websites. Charts use the sidereal zodiac with the Lahiri ayanamsa, the standard for Vedic astrology in India. KP calculations use the Krishnamurti ayanamsa, because that system requires it.

The panchang day runs from one sunrise to the next. The tithi and nakshatra we give for a day are the ones in force at sunrise, and we also show when each one ends. Sunrise moves from city to city, and every muhurat window moves with it, so times are computed for the city you choose. Our festival list follows the all-India almanac convention. When a regional tradition keeps a festival on another day, both can be right, and we try to say so.

We compare computed dates with Drik Panchang, a widely used published panchang. Tithi and nakshatra at sunrise, festival dates and the boundaries of the seasons when weddings are not held are pinned in automated tests against Drik's New Delhi pages, so a code change that moves one of them fails before it reaches the site.

For marriage, griha pravesh, upanayana and mundan we leave out the periods in which a traditional panchang lists no date, however good the day looks on its own. For marriage these are Kharmas (Sun in Dhanu), Malmas (Sun in Meena), the Sun in Karka, Simha or Kanya, Chaturmas, an adhik or kshaya month, and the time when Venus or Jupiter is combust, together with the three days before it sets and the three days after it rises. The rules come from the vivaha chapter of Muhurta Chintamani, as Drik Panchang restates them in its published method. Where practice is genuinely divided, we leave a date in rather than hide one a family may be entitled to use.

Ask Acharya, our AI astrologer, writes its answers with a large language model. The model does not calculate anything. Your chart, the planets' signs and houses, your dasha periods and their dates, and your age are computed in code first and given to the model as fixed facts. If an answer changes one of those facts it is written again, and if it still gets them wrong, the wrong part is removed or the answer is not shown.

The model can still be wrong in what it makes of those facts, as any astrologer can. Its answers are guidance for reflection. They are not medical, legal, financial or psychological advice and are no substitute for a qualified professional.

If you find a wrong date, a wrong time or a factual error, write to contact@vidhata.app with the link to the page and what you think is wrong. We check it against our engine and the published panchangs. If we were wrong, we correct the page and change its Updated date so you can see it was revised. If the mistake came from the engine, we fix the engine, which corrects every page that uses it.

No one pays to appear in our articles, rankings or lists of dates, and the site carries no advertising. We never sell your data. Links to Ask Acharya and to our free tools point to Vidhata's own products.