The date, and why it is worth explaining

Ganesh Chaturthi 2026 falls on Monday, September 14. If that is all you came for, that is the answer, and it is the date our own Festival Calendar 2026 and the Ganesh Chaturthi 2026 guide carry.

The reason it falls there is unusually worth knowing, because this year the festival is decided by a rule most guides never mention, and the rule most guides do use would give a different answer. The Chaturthi tithi — the fourth lunar day of the bright fortnight of Bhadrapada — does not begin until well after sunrise on the 14th, and does not end until well after sunrise on the 15th. Almost every Hindu festival is fixed by which tithi is running at sunrise. Apply that rule here and you get Tuesday the 15th, in every Indian city, without exception.

Ganesh Chaturthi is not fixed by sunrise. It is fixed by madhyahna — the middle portion of the day — because the tradition holds that Ganesha was born at midday. Once you use the rule the festival actually belongs to, Monday the 14th is not merely the answer but an unusually clean one: the Chaturthi covers the whole of madhyahna on the 14th in every city we computed, and none of it on the 15th.

That is the whole argument of this guide, and everything below is the working. We computed every figure here with the same panchang engine that powers our live Panchang, and stated the margins so you can check us.

The computed tithi window

A tithi (तिथि) is a lunar day, and it is not a day in the ordinary sense at all. It is the span of time during which the angular distance between the Moon and the Sun sweeps through twelve degrees. Because the Moon does not move at a constant rate, a tithi can run anywhere from about nineteen to about twenty-six hours, and it begins and ends at a clock time that has nothing to do with midnight or with sunrise. This is why a festival "date" is really a question about which tithi is running at a particular moment of a particular day.

Bhadrapada Shukla Chaturthi in 2026 begins at 7:07 am IST on Monday, September 14 and ends at 7:45 am IST on Tuesday, September 15. That is a span of just over twenty-four and a half hours, which means it straddles two sunrises without properly belonging to either.

One note on the month name, because it causes needless confusion in mixed families. In the amanta reckoning used in Maharashtra, Gujarat, Karnataka and the south, this is Bhadrapada Shukla Chaturthi. In the purnimanta reckoning used across much of north India the fortnight carries the same name here, so for this particular festival both traditions say Bhadrapada. There is no north–south disagreement about the month this time, and none about the day either.

Why the sunrise rule points at the wrong day

The ordinary rule for fixing a Hindu festival is udaya-vyapini: keep it on the day whose sunrise the relevant tithi touches. It is a good rule and it decides most of the calendar, including the Ekadashi vrat, which we worked through in detail in our Ekadashi fasting-rules guide.

Apply it to Ganesh Chaturthi 2026 and it fails cleanly and unanimously. At sunrise on Monday the 14th, the tithi running is Tritiya, the third — the Chaturthi is still an hour or more away in every Indian city. At sunrise on Tuesday the 15th, the tithi running is the Chaturthi, which then expires between about seventy-nine minutes later in Ahmedabad and Mumbai and about a hundred and forty-two minutes later in Kolkata. The sunrise rule therefore points at Tuesday the 15th everywhere.

This is not a marginal case that could tip either way. It is not a case where cities disagree with one another, as they genuinely did for Dev Uthani Ekadashi, where the tithi boundary fell inside the spread of Indian sunrises and Delhi and Mumbai legitimately kept a different day from Kolkata and Chennai. Here every city agrees with every other city. What differs is only which rule you apply — and for this festival, the tradition is explicit about which one that is.

• By the sunrise (udaya) rule: Tuesday, September 15 — in all eight cities computed, with no city close to the boundary.
• By the madhyahna rule, which is the one Ganesh Chaturthi is actually governed by: Monday, September 14 — again in all eight cities, and again with no city close to the boundary.
• The two rules do not disagree because the calculation is uncertain. They disagree because they are asking different questions of the same tithi.

What madhyahna is, and how it is computed

Madhyahna (मध्याह्न) means, plainly, "midday" — but as a ritual quantity it is not twelve o'clock, and it is not the same clock time in Kolkata as in Ahmedabad. The day from sunrise to sunset is divided into equal parts, and madhyahna is the middle portion of that division. Because sunrise and sunset shift with your longitude and latitude, so does your madhyahna. A national headline time is therefore not something you can act on; a window computed for your own city is.

The classical digests are unambiguous that Ganesh Chaturthi belongs to this kala rather than to sunrise, and the reason is the same reason Janmashtami belongs to midnight: the observance keeps the hour of the birth, not merely the day. Ganesha is remembered as born at midday, so the sthapana — the installation of the murti, which is the moment the festival actually begins in your home — is done in madhyahna.

We computed madhyahna both ways it is commonly defined, as the middle third of the day and as the narrower middle fifth, for eight cities. The verdict does not depend on which definition you prefer: on Monday the 14th, the Chaturthi covers the entire madhyahna window in all eight cities on both definitions, and on Tuesday the 15th it covers none of it, on both definitions. The tightest margin anywhere in that set is Kolkata, where madhyahna opens two hours and twenty-one minutes after the tithi begins. There is nothing marginal here at all.

• Madhyahna is a proportion of your own daylight, not a clock time — it moves with your city.
• The middle third is the broader and more commonly published definition; the middle fifth is the narrower one used in our own festival auditor.
• For 2026 both definitions give the same answer in every city, which is what makes this year’s date unusually safe to state plainly.

Your city’s sthapana window on Monday, September 14

Below is the computed madhyahna window — the sthapana muhurat — for eight cities, using the middle-third definition. Any time inside your city’s window is a correct time to install the murti. If your household keeps a narrower reckoning, the middle fifth sits inside this and the centre of the window is always safe.

If your city is not listed, do not interpolate from the nearest one — the difference between Kolkata and Ahmedabad here is over an hour, and longitude alone does not capture it. Ask Purohit Ji for your own location, or read your own sunrise and sunset from the live Panchang and take the middle third between them.

• Kolkata — 9:29 am to 1:35 pm
• Chennai — 10:02 am to 2:07 pm
• Hyderabad — 10:09 am to 2:14 pm
• Delhi — 10:13 am to 2:20 pm
• Bengaluru — 10:13 am to 2:17 pm
• Pune — 10:27 am to 2:33 pm
• Mumbai — 10:31 am to 2:37 pm
• Ahmedabad — 10:32 am to 2:38 pm

The sthapana vidhi, step by step

Sthapana is the installation of the murti and, with it, the invitation of a guest. Everything about the ten days that follow — the daily arati, the food offered, the farewell procession — follows from that framing, and the vidhi below is simply hospitality made precise. It takes about forty minutes unhurried, and the full sixteen-step form with mantras is set out on our Ganesh puja vidhi page.

The step that matters most, and the one most often skipped, is pran-pratishtha (प्राणप्रतिष्ठा) — the invocation of living presence into the form. Before it, the murti is an image; after it, it is a guest in your house, and that is what makes the visarjan at the end a farewell rather than a disposal.

• Prepare before your window opens: bathe, clean the space, and set a chowki (a low wooden seat) draped in red cloth, facing east or north.
• Place the murti on the chowki, with a kalash — a pot of water topped with mango leaves and a coconut — beside it.
• Sankalpa: holding water and akshat (rice coloured with turmeric), state your name, your place, the date and what you are about to do. This is what turns preparation into observance.
• Pran-pratishtha: invoke Ganesha into the murti with the Ganesh Vandana, "Vakratunda Mahakaya Suryakoti Samaprabha" — O curved-trunked, great-bodied one, radiant as a million suns.
• Shodashopachara, the sixteen honours: seat, water for the feet and hands, bath with panchamrit and then clean water, fresh cloth, sandalwood and kumkum.
• Offer twenty-one blades of durva grass and red flowers, hibiscus for preference. Twenty-one is the traditional count, and durva is the offering the tradition names as most pleasing to Ganesha after modak.
• Naivedya: modak, and fruit. If modak is not available, any sweet made with jaggery, coconut or ghee carries the offering — the intention matters more than the recipe.
• Chant "Om Gam Ganapataye Namah" — the beeja mantra, whose seed-syllable is Gam — a hundred and eight times, or read the Ganesh Atharvashirsha if you know it.
• Close with arati and pushpanjali, then distribute prasad. The Jai Ganesh Deva arati is the one most households sing, with the Devanagari, transliteration and meaning side by side.

The samagri, grouped so you can shop from it

Nothing on this list is difficult to find, and a household that already keeps a puja shelf will have most of it. The one item worth planning ahead for is the murti itself: clay (shadu) murtis sell out in the week before the festival in most cities, and they are the ones that dissolve cleanly at visarjan.

• The altar — clay Ganesha murti, wooden chowki, red cloth, kalash with mango leaves and a coconut, mauli (the red-and-yellow sacred thread).
• Marks and offerings — akshat, kumkum, chandan and sandalwood paste, twenty-one durva blades, red flowers and hibiscus, betel leaves, betel nuts, coins for dakshina.
• Bath and food — panchamrit (milk, curd, ghee, honey, sugar), modak or laddu, fruit, coconut.
• Light and fire — a ghee or oil diya, cotton wicks, agarbatti, camphor.
• Optional but rewarding — a copy of the Ganesh Atharvashirsha, if anyone in the house can read it aloud.

Chandra darshan: the rule about not looking at the moon

Ganesh Chaturthi carries a prohibition that surprises people meeting it for the first time: on this day the tradition asks you not to look at the moon. The story attached to it is told in the Puranic literature around Ganesha and is the reason the day is sometimes called a "kalank" day — a day of blemish — the idea being that seeing the moon on this Chaturthi attracts unfounded accusation. It is a custom kept widely and lightly; families who observe it simply avoid looking up after dark, and those who slip are told to hear or read the Syamantaka story as the remedy.

Since this is a practical guide, here is the physically checkable part: the moon is above the horizon in Delhi from 9:01 am to 8:08 pm on September 14, and in Mumbai from 9:06 am to 8:41 pm. Most of that span is daylight, when the moon is not conspicuous in any case. The portion that matters in practice is the stretch between sunset and moonset — about one hour and forty minutes in Delhi, and about two hours in Mumbai. After moonset the question does not arise at all.

Treat this the way the tradition does: as a custom worth respecting rather than a source of anxiety. The observance that day is the sthapana and the worship, not the avoidance.

How long Ganesha stays

There is no single correct length. Families keep Ganesha for one and a half days, three, five, seven, or the full stay ending on Anant Chaturdashi, and each of these is a complete observance rather than a truncated version of a longer one. The length is a family tradition and is usually inherited rather than chosen.

One distinction is worth being precise about, because it is where published listings go wrong. The shorter stays are counted in days from the sthapana day: with sthapana on Monday, September 14, the day-and-a-half visarjan falls on Tuesday the 15th, the third-day on Wednesday the 16th, the fifth-day on Friday the 18th and the seventh-day on Sunday the 20th. The full stay is not a day-count at all. It ends on Anant Chaturdashi, which is a tithi — and in 2026 that tithi does not land where a ten-day count would put it.

• One and a half days — Tuesday, September 15
• Third day — Wednesday, September 16
• Fifth day — Friday, September 18
• Seventh day — Sunday, September 20
• Full stay, on Anant Chaturdashi — Friday, September 25

Visarjan: Friday, September 25, not September 23

Anant Chaturdashi is the fourteenth tithi of the bright fortnight of Bhadrapada, and it is the day of the great visarjan processions. In 2026 that tithi begins at 11:19 pm IST on Thursday, September 24 and ends at 11:07 pm IST on Friday, September 25. It is running at sunrise on Friday the 25th in every Indian city, and through the whole of Friday’s midday as well, so both the sunrise rule and the madhyahna rule agree without argument: visarjan is Friday, September 25, 2026.

This is worth stating carefully, because arithmetic gives a different and wrong answer. Ganesh Chaturthi is universally described as a ten-day festival, and ten days counted from Monday the 14th lands on Wednesday the 23rd. You will see September 23 published as the closing date for exactly that reason. But the immersion is fixed to a tithi, not to a day-count, and between the Chaturthi and the Chaturdashi this year the lunar days stretch enough that the eleven tithis occupy twelve calendar days. The festival closes on the 25th.

If you keep the full stay, plan for Friday the 25th. If you are booking a visarjan slot with a housing society or a municipal immersion tank, that is the date to book, and the two-day difference is exactly the kind of thing worth checking against a listing that shows the 23rd.

The farewell itself is simple: a final arati, a request for forgiveness for anything lacking in the hospitality, the traditional cry of "Ganpati Bappa Morya, pudhchya varshi laukar ya" — Lord Ganpati, come again early next year — and then the immersion. Home visarjan in a clean bucket of water, with the dissolved clay given to the garden afterwards, is a fully accepted form and is now actively encouraged in cities and abroad.

A note on where our dates come from

Every time in this guide was computed rather than copied. The tithi boundaries come from the Moon–Sun elongation, which is independent of ayanamsa and therefore not a matter of school or preference; sunrise and sunset use the upper-limb-with-refraction convention that Indian panchangs use, the same one our own engine ships with. We validated the engine against two known 2026 anchors before trusting any of it, and our committed festival-date auditor independently reports this date as correct under the madhyahna rule.

Where a computation of ours disagrees with a widely published listing — as the visarjan date does here — we say so plainly and show the working rather than quietly following the crowd. If you find an error in anything above, we would rather hear it than not: the contact form reaches us directly.

Where to go from here

The Ganesh Chaturthi 2026 guide carries the festival’s own page, with the significance and the household observance in brief. The Ganesh puja vidhi has the full sixteen-step procedure with the Sanskrit, the transliteration and the meaning of each mantra. The Jai Ganesh Deva arati has the words for the twice-daily arati through Ganesha’s stay.

For the rest of the season, the Festival Calendar 2026 lays out the year, and Krishna Janmashtami and Dahi Handi covers the other great observance of this month, ten days before this one. If you are choosing a date for something of your own rather than following the calendar, the muhurat guide explains how the panchang is read for that, and the Muhurat finder does it for a specific event.