Ruling · Gaṅgotpatti (Ganga Saptami) · 1913

Monday 12 May

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 68 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 Monday 12 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 Tuesday 13 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 10:43 on Mon 12 May to 08:47 on Tue 13 May.

    1913-05-12T02:42:52Z → 1913-05-13T00:46:33Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 12th, 11:51–12:39 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 4068 s

  5. 05

    Ruling

    Gaṅgotpatti, Baoding, 1913: Monday 12 May.

    confidence: determinate

Say it like this

In Baoding, Gaṅgotpatti (Ganga Saptami) 1913 falls on Monday 12 May. Saptamī runs from 10:43 on Mon 12 May to 08:47 on Tue 13 May and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1913/gangotpatti · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 12 May
Ahargaṇa, classicalDisc centre, no refractionMon 12 May
compat-drikpanchangComparison profileMon 12 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles18:43 → 16:4711:2548 min11:250 min12 May
Chicago20:43 → 18:4711:2348 min11:230 min12 May
Jersey City21:43 → 19:4711:2948 min11:290 min12 May
Port of Spain22:43 → 20:4711:3848 min11:380 min12 May
London02:43 → 00:4711:3348 min11:330 min12 May
Durban04:43 → 02:4711:2848 min11:280 min12 May
Dubai06:24 → 04:2811:3248 min11:320 min12 May
Delhi08:13 → 06:1711:5348 min11:530 min12 May
Kolkata08:13 → 06:1711:0948 min11:090 min12 May
Singapore09:43 → 07:4711:3748 min11:370 min12 May
Sydney12:43 → 10:4711:270 min11:270 min13 May
Suva14:38 → 12:4211:330 min11:3348 min13 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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