Ruling · Gaṇeśa Caturthī · 1985

Wednesday 18 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 146 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 Tuesday 17 September

Caturthī is absent from madhyāhna. Not taken.

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

0 of 48 minutes covered

Midday of Wednesday 18 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

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

How it was decided

  1. 01

    Aṅga

    Caturthī runs from 18:02 on Tue 17 Sep to 15:02 on Wed 18 Sep.

    1985-09-17T10:01:38Z → 1985-09-18T07:02:09Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 17th, 11:48–12:36 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. 103

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 8765 s

  5. 05

    Ruling

    Gaṇeśa Caturthī, Baoding, 1985: Wednesday 18 September.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Caturthī 1985 falls on Wednesday 18 September. Caturthī runs from 18:02 on Tue 17 Sep to 15:02 on Wed 18 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1985/ganesha-chaturthi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 18 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 18 Sep
compat-drikpanchangComparison profileWed 18 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles03:02 → 00:0212:2348 min12:230 min17 Sep
Chicago05:02 → 02:0212:2148 min12:200 min17 Sep
Jersey City06:02 → 03:0212:2648 min12:260 min17 Sep
Port of Spain06:02 → 03:0211:3648 min11:360 min17 Sep
London11:02 → 08:0212:3048 min12:300 min17 Sep
Durban12:02 → 09:0211:2713 min11:260 min17 Sep
Dubai14:02 → 11:0211:490 min11:490 min18 Sep
Delhi15:32 → 12:3211:510 min11:5141 min18 Sep
Kolkata15:32 → 12:3211:070 min11:0748 min18 Sep
Singapore18:02 → 15:0212:350 min12:3548 min18 Sep
Sydney20:02 → 17:0211:260 min11:2648 min18 Sep
Suva22:02 → 19:0211:370 min11:3748 min18 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

About Ahargaṇa