Why a Muhurat From the Wrong City Is Simply Wrong

By KundliAI Editorial Team·6 min read·Updated 2026-11-07

TL;DR

Half of a muhurat is global and half is local, and knowing which half is which saves most of the confusion. Tithi, nakshatra, yoga and karana are angles between the Sun and the Moon, so their start and end instants are the same everywhere on Earth and only the local clock reading changes. Sunrise, sunset, Rahu Kaal, Abhijit, the choghadiya divisions and above all the rising ascendant are local, determined by latitude and longitude. India observes a single time zone across roughly thirty degrees of longitude, which is close to two hours of solar time, so the sun rises in Arunachal Pradesh long before it rises in Gujarat on the same clock. A muhurat published for Delhi and used in Kolkata or Mumbai can be off by an hour or more on exactly the components that define the window. The tithi is the part you can safely copy. The clock time is the part you must compute.

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The two halves of a panchang

Some quantities in a panchang are properties of the solar system and some are properties of where you are standing. They behave completely differently and are usually printed side by side without the distinction being made.

Tithi is the angular distance from the Sun to the Moon, divided into thirty parts. That angle has one value at any instant, for everybody. When amavasya begins on 8 November 2026 at 11:29 IST, it begins at that instant worldwide. Someone in London reads it as 05:59 their time, but it is the same instant. Nakshatra, yoga and karana work the same way.

Sunrise is not like that at all. It is the moment the Sun's disc crosses your horizon, which depends on your latitude, your longitude and the date. Every quantity derived from sunrise inherits that dependence.

So a tithi table is portable and a timings table is not. That single distinction is the whole of this page.

One clock, thirty degrees

India uses a single time zone, IST, set at five and a half hours ahead of UTC and referenced to a longitude near Mirzapur in Uttar Pradesh.

The country spans roughly from sixty eight to ninety seven degrees east. Since the Earth turns fifteen degrees per hour, that is close to two hours of real solar time held under one clock reading.

The effect is easy to state. In the far east, around Dibrugarh or Itanagar, the Sun rises very early by the clock and sets early. In the far west, around Dwarka or Ahmedabad, both are late. Kolkata and Mumbai differ by roughly an hour of solar time, and both call it the same o'clock.

That hour does not average out or cancel. It shifts sunrise, and therefore it shifts every eighth of the daylight period, which is to say Rahu Kaal, Gulika, Yamaganda and the choghadiya. It shifts local midday, and therefore Abhijit. And it shifts which sign is rising, which is the component that most often decides the window.

The ascendant is the most location-sensitive part

The ascendant is the point of the ecliptic crossing the eastern horizon, and it depends on longitude and latitude directly rather than through sunrise.

It moves fast. A full zodiac passes the horizon in roughly twenty four hours, so on average a sign rises for about two hours, but the signs do not take equal turns. At northern latitudes some signs rise in well under two hours and others take far longer, and the imbalance grows the further north you go. Delhi at twenty eight degrees north and Chennai at thirteen behave noticeably differently.

This is why the published Lakshmi Puja window on Diwali is what it is. On 8 November 2026 in Delhi the fixed sign Taurus rises from 17:54 to 19:49 IST. Move the observer and both ends of that window move, by more than the sunrise difference alone, because the rate at which Taurus crosses the horizon also changes with latitude.

So when a page gives you a puja window to the minute without asking where you are, it has given you a window for somewhere else. Diwali 2026 shows the intersection being built, and names the city it is built for.

What this means in practice

Copy the tithi, compute the clock. If a source gives you tithi start and end instants in IST, those are usable anywhere once converted. If it gives you a Rahu Kaal or a puja window, ask which city, and if it does not say, do not use it.

For festivals whose ritual time is sunrise or sunset the stakes are highest, because the moment is the event rather than a window around it. Chhath Puja is the clearest case: the arghya offerings are made as the Sun sets and rises, and the observance is concentrated in Bihar while most published timings are computed for Delhi.

If you are abroad, the same logic applies with a larger correction. The tithi holds, converted to your zone. Everything else must be computed for where you actually are, and a muhurat for Mumbai is no more use in New Jersey than one for Delhi is in Patna.

The muhurat finder takes a location for this reason, and the panchang separates the global limbs from the local timings.

Which parts of a panchang transfer between cities
Quantity	Same instant everywhere?	Depends on
Tithi	Yes	Sun to Moon angle only
Nakshatra	Yes	Moon's sidereal longitude only
Yoga and karana	Yes	Sun and Moon longitudes only
Sunrise and sunset	No	Latitude, longitude, date
Rahu Kaal, Gulika, Yamaganda	No	Local sunrise and sunset
Abhijit muhurat	No	Local midday
Choghadiya	No	Local sunrise and sunset
Ascendant (lagna)	No	Latitude and longitude, strongly

Frequently asked questions

Is the tithi the same in every city?

Yes. A tithi is the angular distance from the Sun to the Moon divided into thirty parts, and that angle has a single value at any instant for the whole Earth. When amavasya begins on 8 November 2026 at 11:29 IST it begins at that instant everywhere, and only the local clock reading of it changes. Nakshatra, yoga and karana behave the same way. This is the portable half of a panchang.

Why is Rahu Kaal different in Mumbai and Kolkata?

Because it is one eighth of the local daylight period, counted from local sunrise, and India keeps one clock across about thirty degrees of longitude. That is close to two hours of solar time, so the Sun rises in Kolkata roughly an hour earlier than in Mumbai by the same clock. Every eighth of the day between those two sunrises shifts accordingly, which moves Rahu Kaal, Gulika, Yamaganda and the choghadiya segments.

How much can a muhurat window move between cities?

On the order of an hour within India, and sometimes more for the ascendant. Sunrise differences across the country approach two hours of solar time. The ascendant adds a second effect, because the rate at which each sign crosses the horizon depends on latitude, so a sign that rises for two hours in Chennai may rise for a different span in Delhi. A window given to the minute without a named city should be treated as a window for somewhere else.

Can I use an Indian muhurat if I live abroad?

Partly. Convert the tithi, nakshatra, yoga and karana instants to your own time zone and they remain correct, because those are global. Everything derived from sunrise or from your coordinates must be recomputed: sunrise and sunset, Rahu Kaal, Abhijit, choghadiya and the ascendant. A muhurat computed for Mumbai is no more usable in New Jersey than a Delhi one is in Patna, and for festivals whose ritual moment is sunrise or sunset the error is the whole point.

Why does India not use multiple time zones?

It is a policy choice rather than an astronomical one. IST is set five and a half hours ahead of UTC and referenced to a longitude near Mirzapur, and a single zone has been retained for administrative coherence despite the country spanning roughly sixty eight to ninety seven degrees east. For muhurat purposes the consequence is simply that clock time and solar time diverge by up to about an hour in either direction, so local computation is not optional.

Sources

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