Ruling · Gaṅgotpatti (Gaṅgā Saptamī) · 2012

Saturday 28 April

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 362 minutes.

Decide it for

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 28 April

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 29 April

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 05:01 on Sat 28 Apr to 05:50 on Sun 29 Apr.

    2012-04-27T21:00:59Z → 2012-04-28T21:50:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:52–12:40 on the 28th, 11:52–12:40 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 21705 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 2012: Saturday 28 April.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 2012 falls on Saturday 28 April. Saptamī runs from 05:01 on Sat 28 Apr to 05:50 on Sun 29 Apr and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2012/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 28 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 28 Apr
compat-drikpanchangComparison profileSat 28 Apr
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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles14:01 → 14:5012:270 min12:2748 min28 Apr
Chicago16:01 → 16:5012:250 min12:2448 min28 Apr
Jersey City17:01 → 17:5012:300 min12:3048 min28 Apr
Port of Spain17:01 → 17:5011:400 min11:4048 min28 Apr
London22:01 → 22:5012:350 min12:3448 min28 Apr
Durban23:01 → 23:5011:290 min11:2948 min28 Apr
Dubai01:01 → 01:5011:530 min11:5248 min28 Apr
Delhi02:31 → 03:2011:550 min11:5548 min28 Apr
Kolkata02:31 → 03:2011:100 min11:1048 min28 Apr
Singapore05:01 → 05:5012:380 min12:3848 min28 Apr
Sydney07:01 → 07:5011:290 min11:2848 min28 Apr
Suva09:01 → 09:5011:400 min11:4048 min28 Apr
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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