Ruling · Gaṇeśa Jayantī (Maghi Ganesh Jayanti) · 1990

Tuesday 30 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 536 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 Monday 29 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 30 January

Taken. The only midday Caturthī reaches.

madhyāhna begins 12:08  12:56 madhyāhna ends
11:2011:4412:0812:3212:5613:2013:44

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 23:41 on Mon 29 Jan to 21:52 on Tue 30 Jan.

    1990-01-29T15:41:08Z → 1990-01-30T13:51:57Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:07–12:55 on the 29th, 12:08–12:56 on the 30th.

    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 29th and 48 of 48 on the 30th.

    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 32181 s

  5. 05

    Ruling

    Gaṇeśa Jayantī, Baoding, 1990: Tuesday 30 January.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1990 falls on Tuesday 30 January. Caturthī runs from 23:41 on Mon 29 Jan to 21:52 on Tue 30 Jan and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1990/ganesha-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 30 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 30 Jan
compat-drikpanchangComparison profileTue 30 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 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles07:41 → 05:5211:4248 min11:430 min29 Jan
Chicago09:41 → 07:5211:4048 min11:400 min29 Jan
Jersey City10:41 → 08:5211:4648 min11:460 min29 Jan
Port of Spain11:41 → 09:5211:5548 min11:550 min29 Jan
London15:41 → 13:5211:500 min11:5048 min30 Jan
Durban17:41 → 15:5211:450 min11:4548 min30 Jan
Dubai19:41 → 17:5212:080 min12:0848 min30 Jan
Delhi21:11 → 19:2212:100 min12:1048 min30 Jan
Kolkata21:11 → 19:2211:260 min11:2648 min30 Jan
Singapore23:41 → 21:5212:540 min12:5448 min30 Jan
Sydney02:41 → 00:5212:440 min12:4448 min30 Jan
Suva03:41 → 01:5211:550 min11:5548 min30 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

About Ahargaṇa