Vinayaka Chaturthi 2027 List: 13 Dates by the Madhyahna Rule

Vinayaka Chaturthi is the fourth lunar day of the waxing fortnight, kept for Ganesha once a month; the Bhadrapada one is the great annual Ganesh Chaturthi, and the others are smaller monthly observances that go by the same name. Thirteen of them fall in 2027. For twelve the day is settled. One, in December, is placed on different days by two reasonable readings of the same rule, and this page shows both.

The Rule: Chaturthi at Madhyahna (विनायक चतुर्थी)

Vrat manuals place the Ganesha puja of this day at madhyahna, and the site’s festival tables fix Ganesh Chaturthi the same way: its row carries the rule “tithi at madhyahna”. Madhyahna is not noon by the clock. Daylight is cut into five equal parts, and madhyahna is the middle one, so its edges move with each day’s sunrise and sunset. In New Delhi it runs from 11:12 to 13:17 on 13 December 2026, 125 minutes, and stretches to 167 minutes in high summer.

Each Shukla Chaturthi of the year was measured against the madhyahna of every day it touches. The day whose whole window lies inside the tithi takes the observance; when no day has the whole of it, the only day with any of it does. The festival tables give Chaturthi start and end times only for Ganesh Chaturthi, so the other instants come from the site’s lunar code, which agrees with the DE421 tables to within one minute at all 86 instants where both exist. The scan lands on the table’s own Ganesh Chaturthi date, Saturday 4 September, without being told it. Every decision below was re-run with the tithi lengthened and shortened by 30 minutes at both ends, and none moved.

The 2027 List, With December 2026

Waxing-fortnight months carry the same name in the amanta and purnimanta calendars, so the month column holds everywhere. The names come from the festival rows that share each lunation, and 2027 has no added month to shift them. Dates are for New Delhi; the Chaturthi starts and ends at the same instant across India, but madhyahna does not, and the panchang calculator gives your own sunrise and sunset.

The list opens with the last of 2026, Sunday, 13 December 2026, in Margashirsha. Its Chaturthi opens at 14:06 on 12 December, after that day’s madhyahna has closed, and runs to 16:48 on 13 December, past the whole of the next day’s.

Ganesh Jayanti in Magha

The Magha Chaturthi, Wednesday 10 February 2027, is kept in Maharashtra and parts of the west as Ganesh Jayanti, Ganesha’s birth-day in that regional reckoning, which is separate from the Bhadrapada festival. In 2027 it gives no trouble: the tithi opens at 02:20 on 10 February, before dawn, and closes at 03:05 on 11 February, so it holds that day’s sunrise and all of its madhyahna, and every rule names the same day. Vasant Panchami follows on Thursday 11 February.

Two Middays the Tithi Only Partly Covers

In June and September the Chaturthi runs out in the middle of madhyahna. On Tuesday 8 June it ends at 12:22, leaving 86 of the window’s 167 minutes in Chaturthi; on Saturday 4 September, Ganesh Chaturthi itself, it ends at 12:26 with 82 of 151 minutes. That looks precarious, but neither day has a rival. Both tithis began on the previous afternoon, 103 and 43 minutes after that day’s madhyahna had ended, so the day before holds none of it and the part-day is the only candidate.

Moving the observer does not change that. Over the site’s 38 panchang cities, the 8 June share runs from 64 minutes in Mumbai to 143 in Guwahati, and the 4 September share from 63 in Mumbai to 140 in Guwahati. India keeps one clock, so the sun reaches its midday earlier in the east; madhyahna there opens sooner and catches more of a tithi that ends just after midday. No city’s previous day gets any. The generator’s own test, which reads the tithi at the midpoint of daylight, passes on these two days by only 2 and 6 minutes; the window reading does not lean on that. The puja timing those shares imply for Ganesh Chaturthi is worked out on the Ganesh Chaturthi 2027 sthapana page.

December: A Whole Window and Part of One

The Margashirsha Chaturthi opens at 11:39 on 1 December. On Wednesday the 1st, madhyahna has already begun at 11:07, so that day holds the last 93 minutes of its window in Chaturthi. The tithi then runs to 13:44 on 2 December, after the 2nd’s madhyahna ends at 13:12, so Thursday holds all 125 minutes. It also holds the sunrise.

Read as a window, the rule gives Thursday 2 December: it is the only day with the whole of madhyahna. The generator behind the site’s festival tables reads the rule differently. It tests a single instant, the midpoint of daylight, and when two days pass it takes the first. On the 1st that midpoint is 12:10, after the tithi has begun, so both days pass and the generator’s convention would print Wednesday 1 December. Printed calendars resolve a case like this by their own conventions, and this page does not choose among them; the entry is 1 December or 2 December.

The site’s solar routine, run for all 38 cities, keeps the shape of the case: every one has the whole madhyahna on the 2nd and a part of it on the 1st, from 36 minutes in Guwahati to 114 in Mumbai. In Kolkata and Guwahati the daylight midpoint of the 1st comes at least ten minutes before the tithi opens, so there even the midpoint test names the 2nd.

When the Wall Calendar Shows Another Day

A printed calendar normally shows the tithi current at sunrise. For most of these months that is the madhyahna day too, but not when the Chaturthi begins in the morning, after sunrise and before madhyahna. Then the first day has it at midday and the second has it at dawn. That happens at 11 January (calendar: 12 January), 9 May (calendar: 10 May) and 31 December (calendar: 1 January 2028). Take January: the Chaturthi opens at 09:28, after the 07:15 sunrise and before madhyahna begins at 11:26, so the 11th carries the whole window. The 12th wakes to Chaturthi, but the tithi ends at 11:29, 3 minutes into that day’s madhyahna. A calendar that marks the vrat rather than the tithi should agree with the first column above.

The last one runs off the end of the year. It opens at 08:12 on 31 December and ends at 10:55 on 1 January 2028; the site’s daily table stops at 31 December, so that morning’s sunrise and madhyahna come from the solar routine, which matches the table to within two minutes on the 31st. Madhyahna on the 1st would not open until 11:22, 27 minutes after the tithi has gone, so the 31st is the day.

Wednesdays and the Weekday

Wednesday is the weekday household custom gives to Ganesha, and two of the settled days of 2027 land on one: 10 February and 7 July. That is a coincidence of the calendar, not a separate observance, and the page attaches no particular result to it; the weekly fast is described on Wednesday fasting for Budh and Ganesh. Customs for the monthly day itself vary by family and region: some households fast until the midday puja, others simply add modak or durva grass to the usual worship.

Related Pages

Every morning on which Shukla Chaturthi held sunrise in the tables is on the Shukla Chaturthi page, which is a sunrise list and not a vrat list. The other monthly observances of the year are on the Ekadashi 2027, Pradosh Vrat 2027 and Masik Shivratri 2027 lists, the year as a whole is in the 2027 festival calendar, and every computed festival date is on the festival pages. In Hindi: विनायक चतुर्थी 2027 लिस्ट.