Ruling · Durgā Saptamī · 2017

Wednesday 27 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 476 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two mornings

One ghaṭī is 24 minutes. The first muhūrta after sunrise is 1st of 15 day muhūrtas.

Morning of Wednesday 27 September

Taken. The only morning Saptamī reaches.

sunrise 05:33  06:21 one muhūrta on
04:4505:0905:3305:5706:2106:4507:09

48 of 48 minutes covered

Morning of Thursday 28 September

Saptamī is absent from the first muhūrta after sunrise. Not taken.

sunrise 05:35  06:22 one muhūrta on
04:4705:1105:3505:5906:2306:4707:11

0 of 47 minutes covered

Saptamī presentThe first muhūrta after sunrise, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Saptamī runs from 19:11 on Tue 26 Sep to 21:39 on Wed 27 Sep.

    2017-09-26T11:11:13Z → 2017-09-27T13:38:42Z

  2. 02

    Kāla

    The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:33–06:21 on the 27th, 05:35–06:22 on the 28th.

    udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Saptamī must hold through the first muhūrta after sunrise. It covers 48 of 48 minutes on the 27th and 0 of 47 on the 28th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one morning qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 28552 s

  5. 05

    Ruling

    Durgā Saptamī, Daqing, 2017: Wednesday 27 September.

    confidence: determinate

Say it like this

In Daqing, Durgā Saptamī 2017 falls on Wednesday 27 September. Saptamī runs from 19:11 on Tue 26 Sep to 21:39 on Wed 27 Sep and covers all of the first muhūrta after sunrise that morning.

ahargana.org/daqing/festivals/2017/durga-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 27 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 27 Sep
compat-drikpanchangComparison profileWed 27 Sep
No institution has a recorded ruling for Daqing.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/durga-saptami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Saptamī
Kāla
The first muhūrta after sunrise
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceSaptamīSunrise 26thCoveredSunrise 27thCoveredRuled
Los Angeles04:11 → 06:3906:4448 min06:450 min26 Sep
Chicago06:11 → 08:3906:4348 min06:4448 min27 Sep
Jersey City07:11 → 09:3906:4825 min06:4948 min27 Sep
Port of Spain07:11 → 09:3905:550 min05:5548 min27 Sep
London12:11 → 14:3906:540 min06:5547 min27 Sep
Durban13:11 → 15:3905:410 min05:3949 min27 Sep
Dubai15:11 → 17:3906:090 min06:0948 min27 Sep
Delhi16:41 → 19:0906:120 min06:1248 min27 Sep
Kolkata16:41 → 19:0905:270 min05:2748 min27 Sep
Singapore19:11 → 21:3906:530 min06:5348 min27 Sep
Sydney21:11 → 23:3905:400 min05:3849 min27 Sep
Suva23:11 → 01:3905:530 min05:5249 min27 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
durga-saptami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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