Muhūrtham

Choosing an auspicious time

A muhūrtham is the span of time chosen for a ceremony to begin. This page works out the part of that choice a computer can honestly do: it computes the Panchāṅgam for the day and the place you name, finds the periods that are traditionally set aside for beginning something, notices where the tithi, nakṣatra, yoga and karaṇa change during the day, and offers the windows in which a ceremony may begin clear of them — with the reason for every one, and the reason for everything it set aside. A muhūrtham fixes when a rite starts, not how long it lasts, so the ceremony’s own length is used only to say what it would run into.

What ceremony?

Where will it be held?

Sunrise decides almost everything else, and sunrise is local.

From which date?

Shortest window to offer 15 minutes 30 minutes 45 minutes 1 hour

A muhūrtham fixes when a ceremony begins, not how long it lasts.

How many days to consider? Just that day 3 days 7 days 14 days A month

A wider range gives Gurukkal more to work with.

Evaluate auspicious times Show the full evaluation

No birth details are asked for, because nothing here uses them. The calculation runs in your own browser — nothing is sent anywhere and nothing is stored.

Result

How this works

Four steps, in the order a priest would take them.

1. Establish the local Panchāṅgam. Sunrise and sunset are computed for the coordinates you chose, in that place’s own timezone. The five limbs are read at that sunrise, and every transition during the day is solved for exactly rather than sampled.
2. Work out what is set aside. Rāhu Kālam, Yamagaṇḍam and Durmuhūrtam are derived from the same sunrise and sunset. Bhadrā (the Viṣṭi karaṇa) and the two strong yogas are set aside for the interval they actually occupy — so the answer is “Bhadrā runs until 11:26 AM”, not “today is unsuitable”.
3. Cut the day at every real boundary. A window is only offered if the tithi, nakṣatra, yoga and karaṇa printed beside it hold from its first minute to its last. This is the difference between a muhūrtham and a three-hour guess.
4. Say why. Each window carries the reasons in its favour, the considerations against it, and — in the full evaluation — the identifier of every rule that was applied and every period that was removed.

What this deliberately does not do

Traditional muhūrtham practice includes a good deal more than the above, and this site does not pretend otherwise. Not evaluated here: Tārā Bala, Chandra Bala, Lagna (ascendant) analysis, Eclipse periods, Saṅkrānti / solar ingress, Guru and Śukra asta (combustion) and Ceremony-specific tithi / nakṣatra / weekday tables. Each of those is recorded in the ruleset as proposed and inactive, waiting for Gurukkal to set down how his tradition applies it. Nothing has been filled in from general reading — inventing a rule would be worse than leaving the gap visible.

Questions families ask

How is an auspicious time chosen for a Hindu ceremony?

A muhūrtham is chosen from the Panchāṅgam for the day and the place. The five limbs — vāra, tithi, nakṣatra, yoga and karaṇa — are established for the local sunrise; the periods that are traditionally set aside for beginning something, such as Rāhu Kālam, Yamagaṇḍam and Durmuhūrtam, are worked out from that same sunrise; and a window is sought in which the ceremony may begin clear of them. A muhūrtham fixes the moment a ceremony starts, not its whole length — a wedding that begins in an auspicious window goes on for hours afterwards. Beyond that, a priest weighs the family’s own tradition and, for a wedding or an upanayanam, the birth details of the people concerned. This page does the first part and states plainly that it does not do the second.

Why does the muhūrtham depend on where the ceremony is held?

Almost every element of the Panchāṅgam is anchored to sunrise, and sunrise is local. Rāhu Kālam is one eighth of the day between sunrise and sunset, so it moves with them. A tithi that is running at sunrise in Chennai may already have ended by sunrise in California, which is why an almanac printed in India can put a festival on a different day from the one it falls on here. Everything on this page is computed for the location you choose, in that location’s own timezone, with daylight saving handled automatically.

Why do two Panchāṅgams sometimes disagree?

Because they are answering the same question with different conventions. The two that matter most are the ayanāṃśa — the offset between the tropical and sidereal zodiacs, which moves every nakṣatra boundary — and the definition of the day, which some traditions take from sunrise and others from midnight. This site uses the Drik (observation-based) convention with the Lahiri (Chitrapakṣa) ayanāṃśa, and says so on the methodology page. A difference of a few minutes is normal; a difference of a day usually means a different convention rather than an error.

Does this page decide the muhūrtham?

No, and it is built so that it cannot. It applies 18 rules, every one of which is already published on this site with its basis stated, and it names the rule that produced each decision. It does not evaluate Tārā Bala, Chandra Bala, lagna, eclipse or Saṅkrānti restrictions, planetary combustion, or ceremony-specific tithi and nakṣatra tables — those are matters for a priest reading your family’s own details. Sri Kumar Naganathan Gurukkal fixes the muhūrtham; this page helps you arrive at the conversation with the facts in hand.

Do I have to give my birth details?

No. Nothing on this page asks for a birth date, a birth time or a janma nakṣatra, because nothing it computes uses them. Collecting sensitive personal information that no rule consumes would be wrong. The whole evaluation runs inside your own browser: nothing is sent anywhere and nothing is stored.

Astronomy: Drik (observation-based) convention, Lahiri (Chitrapakṣa) ayanāṃśa, computed from established astronomical formulae. How the Panchāṅgam is calculated · Editorial & ritual standards · Credits & Acknowledgements