Ruling · Gaṅgotpatti (Gaṅgā Saptamī) · 1997

Tuesday 13 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 367 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 13 May

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

48 of 48 minutes covered

Midday of Wednesday 14 May

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:51  12:39 madhyāhna ends
11:0311:2711:5112:1512:3913:0313:27

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 03:39 on Tue 13 May to 05:44 on Wed 14 May.

    1997-05-12T19:39:09Z → 1997-05-13T21:43:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 13th, 11:51–12:39 on the 14th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 22021 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 1997: Tuesday 13 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 1997 falls on Tuesday 13 May. Saptamī runs from 03:39 on Tue 13 May to 05:44 on Wed 14 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1997/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 13 May
Ahargaṇa, classicalDisc centre, no refractionTue 13 May
compat-drikpanchangComparison profileTue 13 May
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/gangotpatti · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Saptamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 102

“S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSaptamīMadhyāhna 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles12:39 → 14:4412:2634 min12:2648 min12 May
Chicago14:39 → 16:4412:230 min12:2348 min13 May
Jersey City15:39 → 17:4412:290 min12:2948 min13 May
Port of Spain15:39 → 17:4411:380 min11:3848 min13 May
London20:39 → 22:4412:330 min12:3348 min13 May
Durban21:39 → 23:4411:280 min11:2848 min13 May
Dubai23:39 → 01:4411:510 min11:5148 min13 May
Delhi01:09 → 03:1411:540 min11:5448 min13 May
Kolkata01:09 → 03:1411:090 min11:0948 min13 May
Singapore03:39 → 05:4412:370 min12:3748 min13 May
Sydney05:39 → 07:4411:270 min11:2748 min13 May
Suva07:39 → 09:4411:390 min11:3948 min13 May
Profile · tradition
pac-rp@2026.1 · smarta
Rule
gangotpatti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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