Ruling · Durgā Saptamī · 1981

Monday 5 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 181 minutes.

Decide it for

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 Monday 5 October

Taken. The only morning Saptamī reaches.

sunrise 05:43  06:29 one muhūrta on
04:5505:1905:4306:0706:3106:5507:19

46 of 46 minutes covered

Morning of Tuesday 6 October

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

sunrise 05:45  06:31 one muhūrta on
04:5705:2105:4506:0906:3306:5707:21

0 of 46 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 00:23 on Mon 5 Oct to 02:44 on Tue 6 Oct.

    1981-10-04T16:22:57Z → 1981-10-05T18:44:01Z

  2. 02

    Kāla

    The first muhūrta after sunrise is 1st of 15 day muhūrtas: 05:43–06:29 on the 5th, 05:45–06:31 on the 6th.

    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 46 of 46 minutes on the 5th and 0 of 46 on the 6th.

    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 10846 s

  5. 05

    Ruling

    Durgā Saptamī, Daqing, 1981: Monday 5 October.

    confidence: determinate

Say it like this

In Daqing, Durgā Saptamī 1981 falls on Monday 5 October. Saptamī runs from 00:23 on Mon 5 Oct to 02:44 on Tue 6 Oct and covers all of the first muhūrta after sunrise that morning.

ahargana.org/daqing/festivals/1981/durga-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 5 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 5 Oct
compat-drikpanchangComparison profileMon 5 Oct
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 4thCoveredSunrise 5thCoveredRuled
Los Angeles09:23 → 11:4406:500 min06:5147 min5 Oct
Chicago11:23 → 13:4406:510 min06:5246 min5 Oct
Jersey City12:23 → 14:4406:560 min06:5746 min5 Oct
Port of Spain12:23 → 14:4405:550 min05:5548 min5 Oct
London17:23 → 19:4407:060 min07:0845 min5 Oct
Durban18:23 → 20:4405:310 min05:3050 min5 Oct
Dubai20:23 → 22:4406:120 min06:1347 min5 Oct
Delhi21:53 → 00:1406:160 min06:1647 min5 Oct
Kolkata21:53 → 00:1405:290 min05:2947 min5 Oct
Singapore23:53 → 02:1406:210 min06:2048 min5 Oct
Sydney02:23 → 04:4405:290 min05:2850 min5 Oct
Suva04:23 → 06:4405:470 min05:4649 min6 Oct
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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