Ruling · Vināyaka Caturthī · 2026

Thursday 18 June

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 367 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 Wednesday 17 June

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 12:04  12:52 madhyāhna ends
11:1611:4012:0412:2812:5213:1613:40

0 of 48 minutes covered

Midday of Thursday 18 June

Taken. The only midday Caturthī reaches.

madhyāhna begins 12:04  12:52 madhyāhna ends
11:1611:4012:0412:2812:5213:1613:40

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 21:39 on Wed 17 Jun to 18:59 on Thu 18 Jun.

    2026-06-17T16:09:09Z → 2026-06-18T13:29:14Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 17th, 12:04–12:52 on the 18th.

    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 17th and 48 of 48 on the 18th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108

  4. 04

    Tie-break

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

    priority: unstated → only-day · margin 22033 s

  5. 05

    Ruling

    Vināyaka Caturthī, Ujjain, 2026: Thursday 18 June.

    confidence: determinate

Say it like this

In Ujjain, Vināyaka Caturthī 2026 falls on Thursday 18 June. Caturthī runs from 21:39 on Wed 17 Jun to 18:59 on Thu 18 Jun and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2026/vinayaka-chaturthi?on=2026-06-18 · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 18 Jun
Ahargaṇa, classicalDisc centre, no refractionThu 18 Jun
compat-drikpanchangComparison profileThu 18 Jun
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/vinayaka-chaturthi · ruleset 2026.3-draft

Month
Every lunation
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 108

“The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles09:09 → 06:2912:3048 min12:300 min17 Jun
Chicago11:09 → 08:2912:2848 min12:280 min17 Jun
Jersey City12:09 → 09:2912:3348 min12:340 min17 Jun
Port of Spain12:09 → 09:2911:4322 min11:430 min17 Jun
London17:09 → 14:2912:380 min12:3848 min18 Jun
Durban18:09 → 15:2911:330 min11:3348 min18 Jun
Dubai20:09 → 17:2911:560 min11:5648 min18 Jun
Delhi21:39 → 18:5911:580 min11:5848 min18 Jun
Kolkata21:39 → 18:5911:130 min11:1448 min18 Jun
Singapore00:09 → 21:2912:410 min12:4248 min18 Jun
Sydney02:09 → 23:2911:320 min11:3248 min18 Jun
Suva04:09 → 01:2911:430 min11:4348 min18 Jun
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vinayaka-chaturthi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s