Ruling · Gaṅgotpatti (Ganga Saptami) · 2013

Friday 17 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 582 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 Thursday 16 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

Midday of Friday 17 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

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

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 22:20 on Thu 16 May to 23:59 on Fri 17 May.

    2013-05-16T14:20:29Z → 2013-05-17T15:58:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 16th, 11:51–12:39 on the 17th.

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

  3. 03

    Rule

    Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 16th and 48 of 48 on the 17th.

    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 34904 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 2013: Friday 17 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 2013 falls on Friday 17 May. Saptamī runs from 22:20 on Thu 16 May to 23:59 on Fri 17 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2013/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 17 May
Ahargaṇa, classicalDisc centre, no refractionFri 17 May
compat-drikpanchangComparison profileFri 17 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles07:20 → 08:5912:2648 min12:260 min16 May
Chicago09:20 → 10:5912:2348 min12:230 min16 May
Jersey City10:20 → 11:5912:2948 min12:290 min16 May
Port of Spain10:20 → 11:5911:3848 min11:3920 min16 May
London15:20 → 16:5912:330 min12:3348 min17 May
Durban16:20 → 17:5911:280 min11:2848 min17 May
Dubai18:20 → 19:5911:510 min11:5148 min17 May
Delhi19:50 → 21:2911:540 min11:5448 min17 May
Kolkata19:50 → 21:2911:090 min11:0948 min17 May
Singapore22:20 → 23:5912:370 min12:3748 min17 May
Sydney00:20 → 01:5911:270 min11:2748 min17 May
Suva02:20 → 03:5911:390 min11:3948 min17 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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