Ruling · Gaṅgotpatti (Gaṅgā Saptamī) · 1981

Sunday 10 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 343 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 9 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 Sunday 10 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 18:57 on Sat 9 May to 18:22 on Sun 10 May.

    1981-05-09T10:57:24Z → 1981-05-10T10:21:56Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 9th, 11:51–12:39 on the 10th.

    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 9th and 48 of 48 on the 10th.

    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 20587 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 1981: Sunday 10 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 1981 falls on Sunday 10 May. Saptamī runs from 18:57 on Sat 9 May to 18:22 on Sun 10 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1981/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 May
Ahargaṇa, classicalDisc centre, no refractionSun 10 May
compat-drikpanchangComparison profileSun 10 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles03:57 → 03:2212:2648 min12:260 min9 May
Chicago05:57 → 05:2212:2348 min12:230 min9 May
Jersey City06:57 → 06:2212:2948 min12:290 min9 May
Port of Spain06:57 → 06:2211:3948 min11:380 min9 May
London11:57 → 11:2212:3348 min12:330 min9 May
Durban12:57 → 12:2211:280 min11:2848 min10 May
Dubai14:57 → 14:2211:510 min11:5148 min10 May
Delhi16:27 → 15:5211:540 min11:5448 min10 May
Kolkata16:27 → 15:5211:090 min11:0948 min10 May
Singapore18:27 → 17:5212:070 min12:0748 min10 May
Sydney20:57 → 20:2211:270 min11:2748 min10 May
Suva22:57 → 22:2211:390 min11:3948 min10 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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