Ruling · Gaṅgotpatti (Ganga Saptami) · 1971

Saturday 1 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 545 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 Saturday 1 May

Taken. The only midday Saptamī reaches.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

48 of 48 minutes covered

Midday of Sunday 2 May

Saptamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:52  12:40 madhyāhna ends
11:0411:2811:5212:1612:4013:0413:28

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 01:46 on Sat 1 May to 02:47 on Sun 2 May.

    1971-04-30T17:45:46Z → 1971-05-01T18:46:45Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 1st, 11:52–12:40 on the 2nd.

    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 1st and 0 of 48 on the 2nd.

    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 32687 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 1971: Saturday 1 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 1971 falls on Saturday 1 May. Saptamī runs from 01:46 on Sat 1 May to 02:47 on Sun 2 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1971/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 1 May
Ahargaṇa, classicalDisc centre, no refractionSat 1 May
compat-drikpanchangComparison profileSat 1 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 30thCoveredMadhyāhna 1stCoveredRuled
Los Angeles10:46 → 11:4712:2648 min12:260 min30 Apr
Chicago12:46 → 13:4712:2426 min12:2448 min30 Apr
Jersey City13:46 → 14:4712:300 min12:3048 min1 May
Port of Spain13:46 → 14:4711:390 min11:3948 min1 May
London18:46 → 19:4712:340 min12:3448 min1 May
Durban19:46 → 20:4711:290 min11:2948 min1 May
Dubai21:46 → 22:4711:520 min11:5248 min1 May
Delhi23:16 → 00:1711:550 min11:5448 min1 May
Kolkata23:16 → 00:1711:100 min11:1048 min1 May
Singapore01:16 → 02:1712:080 min12:0848 min1 May
Sydney03:46 → 04:4711:280 min11:2848 min1 May
Suva05:46 → 06:4711:400 min11:3948 min1 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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