Ruling · Gaṅgotpatti (Ganga Saptami) · 1964

Sunday 17 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 75 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 Sunday 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

Midday of Monday 18 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 10:36 on Sun 17 May to 09:10 on Mon 18 May.

    1964-05-17T02:35:44Z → 1964-05-18T01:10:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 17th, 11:51–12:39 on the 18th.

    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 17th and 0 of 48 on the 18th.

    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 4499 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 1964: Sunday 17 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 1964 falls on Sunday 17 May. Saptamī runs from 10:36 on Sun 17 May to 09:10 on Mon 18 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1964/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 17 May
Ahargaṇa, classicalDisc centre, no refractionSun 17 May
compat-drikpanchangComparison profileSun 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles19:36 → 18:1012:2648 min12:260 min17 May
Chicago21:36 → 20:1012:2348 min12:230 min17 May
Jersey City22:36 → 21:1012:2948 min12:290 min17 May
Port of Spain22:36 → 21:1011:3848 min11:380 min17 May
London03:36 → 02:1012:3348 min12:330 min17 May
Durban04:36 → 03:1011:2848 min11:280 min17 May
Dubai06:36 → 05:1011:5148 min11:510 min17 May
Delhi08:06 → 06:4011:5448 min11:540 min17 May
Kolkata08:06 → 06:4011:0948 min11:090 min17 May
Singapore10:06 → 08:4012:0748 min12:070 min17 May
Sydney12:36 → 11:1011:270 min11:270 min18 May
Suva14:36 → 13:1011:390 min11:3948 min18 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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