Questions
Why does my family or temple calendar differ by a day?
Tithi dates each festival by the tithi that holds at the time it is kept, as Drik Panchang does. It doesn’t model eclipses, bhadra, nakshatra conditions or regional customs, and some traditions follow other rules. When a date matters, go by your family or temple.
Why is a festival on a different day abroad?
A tithi begins at the same moment everywhere, but a festival is kept on the day the tithi holds at a local time: sunrise, dusk or moonrise. In New York or London that time can fall on a different calendar day than in India. Pick your city to see its own dates, or compare cities on the festival pages.
Amanta or purnimanta: which months do I use?
Amanta months end at the new moon and are used in the south and west. Purnimanta months end at the full moon and are used in the north. Festivals fall on the same days either way; only the month name in the dark fortnight changes. Switch with “Months” at the foot of the page.
What is Rahu kalam?
An eighth of the daytime ruled by Rahu, at a different point each weekday. Tradition says not to start anything new in it, a journey included; work already under way can carry on.
Is it accurate outside India?
Everything is worked out for your city’s coordinates and time zone. Festival dates are checked against Drik Panchang for New Delhi (2025–2027) and London (2026).
Is it free? Does it work offline?
It’s free, with no ads and no sign-up. After the first visit it works offline, and you can add it to your home screen from your browser’s share or menu button.
Everything is calculated in your browser for the place you pick. Nothing is looked up from tables. Visits are counted with Cloudflare Web Analytics, which sets no cookies. Signing in with Google is optional; it keeps your birth details for the For you section.
Sun and moon
Positions come from astronomy-engine, a precise open-source ephemeris. Sidereal longitudes use the Lahiri ayanamsa, approximated linearly, which is good to well under a minute of time for panchang purposes.
The day runs from sunrise to the next sunrise. Sunrise is when the sun’s upper edge clears a sea-level horizon, with standard refraction. Hills, buildings and altitude can shift it by a few minutes.
The five limbs
Tithi is each 12° the moon gains on the sun; karana is half of that. Nakshatra is the moon’s sidereal longitude in 27 parts; yoga is the sun’s and moon’s added together, also in 27. Each is named as it stands at sunrise, with the time it ends.
Months are amanta, new moon to new moon, named after the rashi the sun enters during the month. A month in which the sun changes no rashi is adhika. Purnimanta months are the same, shifted by a fortnight.
Hours
Rahu kalam, Yamaganda and Gulika are eighths of the daytime; choghadiya are eighths of the day and of the night; hora are twelfths of each; a muhurta is a fifteenth.
Festivals
A festival falls on the day its tithi holds at the time the observance is kept: sunrise for most, including Janmashtami; midday for Ganesh Chaturthi and Rama Navami; afternoon for Dussehra and Bhai Dooj; dusk for Holika Dahan, Diwali, Dhanteras, Sharad Purnima and Pradosh; midnight for Shivaratri; moonrise for Karwa Chauth and Sankashti. If it holds at that time on two days, the first is taken; if on neither, the day whose sunrise it covers. A sankranti after sunset is kept the next day.
For you
From your birth date, time and place the Moon’s sidereal position at birth gives your nakshatra, pada and rashi. Tara bala counts from your nakshatra to the day’s, in nines: Janma (caution), Sampat, Vipat (avoid), Kshema, Pratyak (avoid), Sadhana, Naidhana (avoid), Mitra, Parama Mitra. Chandra bala counts the day’s Moon sign from yours: the 1st, 3rd, 6th, 7th, 10th and 11th are good, and the 8th is chandrashtama. The best windows are the good day choghadiya (Amrit, Shubh, Labh) outside Rahu kalam, Yamaganda, Gulika and dur muhurta, while both tara and chandra bala are good.
The Vimshottari dasha starts with the lord of your birth nakshatra, whose period is cut by the part of the nakshatra the Moon had already crossed; antardashas split each period in the same order and proportion, with 365.25-day years. Sade Sati is Saturn in the 12th, 1st or 2nd sign from your Moon (rising, peak, setting); Jupiter’s house is counted the same way. These are traditional rules, given as guidance, not prediction. Your birth details are stored with your Google account so they follow you between devices, and a copy stays in this browser; delete them from the For you section at any time.
Compatibility & Synastry
Vedic Ashtakoota evaluates 36 Gunas across eight dimensions: Varna (ego alignment, 1 pt), Vashya (magnetic pull, 2 pts), Tara (karmic longevity, 3 pts), Yoni (instinct & physical chemistry, 4 pts), Graha Maitri (mental rapport, 5 pts), Gana (temperament, 6 pts), Bhakoot (emotional resonance, 7 pts), and Nadi (biological constitution, 8 pts). Scores above 18 indicate workable affinity; 28+ denotes rare cosmic alignment.
These dates match Drik Panchang for New Delhi across 2025–2027 and for London in 2026, with one exception: in 2026 Drik moves Holika Dahan and Holi a day later for Delhi, most likely because of that evening’s lunar eclipse. Eclipses, bhadra timings, regional customs and nakshatra conditions are not modelled, so a family or temple calendar can differ by a day. When it matters, check with them.
Tithi (tithi.agenticrabbit.com) is an astrological software and Vedic panchang calculation service developed by Hardik Sharma (Agentic Rabbit). Customer Support: support@agenticrabbit.com.
1. Services & Digital Products
Tithi provides computational astronomical and Vedic services, daily astrological transits, Janma Kundli calculations, and Ashtakoota compatibility synastry reports. The daily panchang, monthly calendar, and festivals are free. Advanced relationship compatibility analysis, 90-day Muhurta timing, and full daily directives are offered via the "Tithi+" membership (₹199 / month or ₹1,499 / year).
2. Instant Digital Delivery
All services and memberships on this platform are 100% digital goods delivered and activated immediately online in the browser upon successful payment confirmation. No physical products or shipments are involved.
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5. Contact Us
Operator: Hardik Sharma (Agentic Rabbit)
Email: support@agenticrabbit.com
Website: https://tithi.agenticrabbit.com
Location: New Delhi, India