Ruling · Gaṇeśa Jayantī (Maghi Ganesh Jayanti) · 2017

Tuesday 31 January

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 294 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 31 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

Midday of Wednesday 1 February

Caturthī is absent from madhyāhna. Not taken.

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

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 07:14 on Tue 31 Jan to 06:11 on Wed 1 Feb.

    2017-01-30T23:13:47Z → 2017-01-31T22:11:20Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 31st, 12:08–12:56 on the 1st.

    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 31st and 0 of 48 on the 1st.

    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 17640 s

  5. 05

    Ruling

    Gaṇeśa Jayantī, Baoding, 2017: Tuesday 31 January.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 2017 falls on Tuesday 31 January. Caturthī runs from 07:14 on Tue 31 Jan to 06:11 on Wed 1 Feb and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2017/ganesha-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 31 Jan
Ahargaṇa, classicalDisc centre, no refractionTue 31 Jan
compat-drikpanchangComparison profileTue 31 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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles15:14 → 14:1111:430 min11:4348 min31 Jan
Chicago17:14 → 16:1111:400 min11:4048 min31 Jan
Jersey City18:14 → 17:1111:460 min11:4648 min31 Jan
Port of Spain19:14 → 18:1111:550 min11:5648 min31 Jan
London23:14 → 22:1111:500 min11:5048 min31 Jan
Durban01:14 → 00:1111:450 min11:4548 min31 Jan
Dubai03:14 → 02:1112:080 min12:0848 min31 Jan
Delhi04:44 → 03:4112:100 min12:1148 min31 Jan
Kolkata04:44 → 03:4111:260 min11:2648 min31 Jan
Singapore07:14 → 06:1112:540 min12:5448 min31 Jan
Sydney10:14 → 09:1112:440 min12:4448 min31 Jan
Suva11:14 → 10:1111:550 min11:5648 min31 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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