Ruling · Gaṇeśa Caturthī (Vināyaka Caturthī) · 2027

Saturday 4 September

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 24 minutes.

Decide it for

UjjainDelhiKolkataSingaporeSydneyJersey City

23°11′ N 75°47′ E · Asia/Kolkata · GeoNames 1253914

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 3 September

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 12:02  12:50 madhyāhna ends
11:1411:3812:0212:2612:5013:1413:38

0 of 48 minutes covered

Midday of Saturday 4 September

Taken. The only midday Caturthī reaches.

madhyāhna begins 12:02  12:50 madhyāhna ends
Caturthī ends 12:26:21
11:1411:3812:0212:2612:5013:1413:38

24 of 48 minutes covered, the first 24

Caturthī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 14:20 on Fri 3 Sep to 12:26 on Sat 4 Sep.

    2027-09-03T08:49:31Z → 2027-09-04T06:56:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 3rd, 12:02–12:50 on the 4th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 24 of 48 on the 4th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 1413 s

  5. 05

    Ruling

    Gaṇeśa Caturthī, Ujjain, 2027: Saturday 4 September.

    confidence: determinate

Say it like this

In Ujjain, Gaṇeśa Caturthī 2027 falls on Saturday 4 September. Caturthī runs from 14:20 on Fri 3 Sep to 12:26 on Sat 4 Sep and covers 24 of 48 minutes of madhyāhna that midday.

ahargana.org/ujjain/festivals/2027/ganesha-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 4 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 4 Sep
compat-drikpanchangComparison profileSat 4 Sep
No institution has a recorded ruling for Ujjain.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/ganesha-chaturthi · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 103

“S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 3rdCoveredMadhyāhna 4thCoveredRuled
Los Angeles01:50 → 23:5612:2848 min12:280 min3 Sep
Chicago03:50 → 01:5612:2648 min12:250 min3 Sep
Jersey City04:50 → 02:5612:3148 min12:310 min3 Sep
Port of Spain04:50 → 02:5611:4148 min11:410 min3 Sep
London09:50 → 07:5612:3548 min12:350 min3 Sep
Durban10:50 → 08:5611:3248 min11:310 min3 Sep
Dubai12:50 → 10:5611:540 min11:540 min4 Sep
Delhi14:20 → 12:2611:560 min11:5630 min4 Sep
Kolkata14:20 → 12:2611:120 min11:1248 min4 Sep
Singapore16:50 → 14:5612:400 min12:4048 min4 Sep
Sydney18:50 → 16:5611:310 min11:3148 min4 Sep
Suva20:50 → 18:5611:420 min11:4248 min4 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ganesha-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s