Ruling · Vināyaka Caturthī · 2026

Sunday 16 August

Determinatein Ujjain, under the Rashtriya Panchang method. Clear of every threshold by 238 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 Saturday 15 August

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

0 of 48 minutes covered

Midday of Sunday 16 August

Taken. The only midday Caturthī reaches.

madhyāhna begins 12:07  12:55 madhyāhna ends
11:1911:4312:0712:3112:5513:1913:43

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 17:29 on Sat 15 Aug to 16:53 on Sun 16 Aug.

    2026-08-15T11:59:24Z → 2026-08-16T11:23:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 15th, 12:07–12:55 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 14277 s

  5. 05

    Ruling

    Vināyaka Caturthī, Ujjain, 2026: Sunday 16 August.

    confidence: determinate

Say it like this

In Ujjain, Vināyaka Caturthī 2026 falls on Sunday 16 August. Caturthī runs from 17:29 on Sat 15 Aug to 16:53 on Sun 16 Aug and covers all of madhyāhna that midday.

ahargana.org/ujjain/festivals/2026/vinayaka-chaturthi?on=2026-08-16 · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 16 Aug
Ahargaṇa, classicalDisc centre, no refractionSun 16 Aug
compat-drikpanchangComparison profileSun 16 Aug
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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles04:59 → 04:2312:3348 min12:330 min15 Aug
Chicago06:59 → 06:2312:3148 min12:300 min15 Aug
Jersey City07:59 → 07:2312:3648 min12:360 min15 Aug
Port of Spain07:59 → 07:2311:4648 min11:460 min15 Aug
London12:59 → 12:2312:4029 min12:400 min15 Aug
Durban13:59 → 13:2311:370 min11:3648 min16 Aug
Dubai15:59 → 15:2311:590 min11:5948 min16 Aug
Delhi17:29 → 16:5312:010 min12:0148 min16 Aug
Kolkata17:29 → 16:5311:170 min11:1748 min16 Aug
Singapore19:59 → 19:2312:450 min12:4548 min16 Aug
Sydney21:59 → 21:2311:360 min11:3648 min16 Aug
Suva23:59 → 23:2311:470 min11:4748 min16 Aug
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