No. This site does only ganita, the calculation of the sky, which is what its name, NakshatraGanita, says.
Every value here is a measurement of angles: for example, tithi = (Moon − Sun) ÷ 12°. The daily tithi & nakshatra page still lists the traditional time divisions and festivals, shown by how they are calculated. There are no predictions, personality readings, compatibility matching or remedies anywhere on the site.
This app is not a kundali (birth-chart) tool. A kundali needs all nine grahas — Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu and Ketu — plus the Lagna (ascendant) and house placements. This app computes only the Sun and Moon, which is enough for each day's tithi, nakshatra and festivals but not for a birth chart. If you compare your birth date here against a real kundali, the two will differ — that is expected, not a bug.
This page shows the tithi and nakshatra at sunrise, the same convention printed almanacs use. A birth chart needs the value at the exact moment of birth, which is usually a different time of day. To check a specific moment, open the 3D Sky page and scrub to that exact time — it shows the tithi and nakshatra at that precise instant.
Two reasons. First, some traditional almanacs use centuries-old pre-computed tables (the Vakya method), while this app computes positions fresh from astronomical formulas (the Drik method) — the Architects page explains this difference in depth. Second, ayanamsa: this app uses Lahiri ayanamsa, while some family astrologers use Raman or KP ayanamsa, which can shift a value that falls near a boundary onto a different day.
Festival dates are not purely astronomical. The same tithi can fall on different civil days, depending on whether your tradition reckons months amanta (the month ending at the new moon — usual in Karnataka, Maharashtra and much of south India) or purnimanta (ending at the full moon — usual in north India).
On top of that, many vratas and festivals carry their own rule about which sunrise, or which moment of the day, is taken as the basis. This app picks one convention, applies it the same way everywhere, and says clearly which one it used.
Where your region, sampradaya or family practice differs, that difference is real and far older than this app — so follow your own tradition.
The app uses a high-precision ephemeris — the same Drik Ganita approach standard Drik almanacs use, with Lahiri ayanamsa. Tithi, nakshatra and sunrise times are verified against DrikPanchang to within about a minute. For fixing an important muhurta (weddings, ceremonies and similar) we still recommend confirming with your family priest or the almanac your family follows — not because the astronomy is uncertain, but because muhurta selection involves traditional rules beyond the raw timings shown here.
No. All the calculations happen live, entirely on your device, using astronomical formulas built into the app itself. Nothing about the dates or cities you look up is sent to or fetched from any server, and the app works offline after the first visit. The only network use is loading fonts and graphics libraries once, the email form when requesting the yearly calendar, and an anonymous page-view counter (Cloudflare Web Analytics — no cookies, no personal data) — none of these is part of the calculations.
Yes, on the daily tithi & nakshatra page. It lists the next eclipses. Set the page to an eclipse’s date with your city chosen, and it shows whether the eclipse can be seen from there (all of it, part of it, or none of it), how much of the Sun or Moon is covered, and the local times at which it begins, reaches its maximum and ends. The one thing not shown is a map of where on Earth a solar eclipse is total.
Indian cities, for now. The daily tithi & nakshatra page works for any city in its list worldwide, but the printable yearly calendar is a separate product, and we offer it only for cities whose accuracy and reliability we can stand behind.
If you would like one for your city, write to us and we will add it.