Ruling · Gaṇeśa Caturthī · 2012

Wednesday 19 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 560 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Wednesday 19 September

Taken. The only midday Caturthī reaches.

madhyāhna begins 11:48  12:36 madhyāhna ends
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Thursday 20 September

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 11:47  12:35 madhyāhna ends
10:5911:2311:4712:1112:3512:5913:23

0 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 02:28 on Wed 19 Sep to 23:46 on Wed 19 Sep.

    2012-09-18T18:27:48Z → 2012-09-19T15:45:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 19th, 11:47–12:35 on the 20th.

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

  3. 03

    Rule

    Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.

    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 33586 s

  5. 05

    Ruling

    Gaṇeśa Caturthī, Baoding, 2012: Wednesday 19 September.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Caturthī 2012 falls on Wednesday 19 September. Caturthī runs from 02:28 on Wed 19 Sep to 23:46 on Wed 19 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2012/ganesha-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 19 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 19 Sep
compat-drikpanchangComparison profileWed 19 Sep
No institution has a recorded ruling for Baoding.

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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles11:28 → 08:4612:2348 min12:220 min18 Sep
Chicago13:28 → 10:4612:200 min12:200 min19 Sep
Jersey City14:28 → 11:4612:260 min12:260 min19 Sep
Port of Spain14:28 → 11:4611:360 min11:3610 min19 Sep
London19:28 → 16:4612:300 min12:3048 min19 Sep
Durban20:28 → 17:4611:260 min11:2648 min19 Sep
Dubai22:28 → 19:4611:490 min11:4848 min19 Sep
Delhi23:58 → 21:1611:510 min11:5148 min19 Sep
Kolkata23:58 → 21:1611:060 min11:0648 min19 Sep
Singapore02:28 → 23:4612:350 min12:3448 min19 Sep
Sydney04:28 → 01:4611:260 min11:2548 min19 Sep
Suva06:28 → 03:4611:370 min11:3648 min19 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

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