Ruling · Gaṇeśa Jayantī (Maghi Ganesh Jayanti) · 1963

Tuesday 29 January

Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 59 s away. Say “contested”.

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 Monday 28 January

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 Tuesday 29 January

Taken. The only midday Caturthī reaches.

madhyāhna begins 12:07  12:55 madhyāhna ends
Caturthī ends 13:00:23
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 15:28 on Mon 28 Jan to 13:00 on Tue 29 Jan.

    1963-01-28T07:28:29Z → 1963-01-29T05:00:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 28th, 12:07–12:55 on the 29th.

    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 28th and 48 of 48 on the 29th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 299 s < 300 s

  5. 05

    Ruling

    Gaṇeśa Jayantī, Baoding, 1963: Tuesday 29 January.

    confidence: boundary (margin)

Say it like this

In Baoding, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1963 falls on Tuesday 29 January. Caturthī runs from 15:28 on Mon 28 Jan to 13:00 on Tue 29 Jan and covers all of madhyāhna that midday. It is 4 min 59 s from a threshold: treat the date as contested.

ahargana.org/baoding/festivals/1963/ganesha-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 29 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 29 Jan
compat-drikpanchangComparison profileTue 29 Jan
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-jayanti · ruleset 2026.3-draft

Month
Māgha, amānta
Pakṣa · aṅga
Śukla · Caturthī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceCaturthīMadhyāhna 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles23:28 → 21:0011:4248 min11:420 min28 Jan
Chicago01:28 → 23:0011:4048 min11:400 min28 Jan
Jersey City02:28 → 00:0011:4548 min11:460 min28 Jan
Port of Spain03:28 → 01:0011:5548 min11:550 min28 Jan
London07:28 → 05:0011:5048 min11:500 min28 Jan
Durban09:28 → 07:0011:4548 min11:450 min28 Jan
Dubai11:28 → 09:0012:0848 min12:080 min28 Jan
Delhi12:58 → 10:3012:100 min12:100 min29 Jan
Kolkata12:58 → 10:3011:260 min11:260 min29 Jan
Singapore14:58 → 12:3012:230 min12:247 min29 Jan
Sydney17:28 → 15:0011:440 min11:4448 min29 Jan
Suva19:28 → 17:0011:550 min11:5548 min29 Jan
Profile · tradition
pac-rp@2026.1 · smarta
Rule
ganesha-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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