Ruling · Gaṇeśa Jayantī (Maghi Ganesh Jayanti) · 1987

Monday 2 February

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 8 min 48 s.

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 Sunday 1 February

Caturthī is absent from madhyāhna. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
Caturthī begins 13:04:40
11:2011:4412:0812:3212:5613:2013:44

0 of 48 minutes covered

Midday of Monday 2 February

Taken. Caturthī reaches neither midday; the rule takes the second day.

madhyāhna begins 12:08  12:56 madhyāhna ends
Caturthī ends 11:27:33
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 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb.

    1987-02-01T05:04:41Z → 1987-02-02T03:27:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 1st, 12:08–12:56 on the 2nd.

    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 1st and 0 of 48 on the 2nd.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 528 s

  5. 05

    Ruling

    Gaṇeśa Jayantī, Baoding, 1987: Monday 2 February.

    confidence: determinate

Say it like this

In Baoding, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1987 falls on Monday 2 February. Caturthī runs from 13:05 on Sun 1 Feb to 11:28 on Mon 2 Feb, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/1987/ganesha-jayanti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 2 Feb
Ahargaṇa, classicalDisc centre, no refractionMon 2 Feb
compat-drikpanchangComparison profileSun 1 Feb
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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles21:05 → 19:2811:4348 min11:430 min1 Feb
Chicago23:05 → 21:2811:4048 min11:410 min1 Feb
Jersey City00:05 → 22:2811:4648 min11:460 min1 Feb
Port of Spain01:05 → 23:2811:5648 min11:560 min1 Feb
London05:05 → 03:2811:5048 min11:510 min1 Feb
Durban07:05 → 05:2811:4548 min11:450 min1 Feb
Dubai09:05 → 07:2812:0848 min12:090 min1 Feb
Delhi10:35 → 08:5812:1148 min12:110 min1 Feb
Kolkata10:35 → 08:5811:2648 min11:260 min1 Feb
Singapore13:05 → 11:2812:5437 min12:540 min1 Feb
Sydney16:05 → 14:2812:440 min12:4548 min2 Feb
Suva17:05 → 15:2811:560 min11:5648 min2 Feb
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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