Ruling · Durgā Saptamī · 1939

Thursday 19 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 451 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 Thursday 19 October

Taken. The only morning Saptamī reaches.

sunrise 06:02  06:45 one muhūrta on
05:1405:3806:0206:2606:5007:1407:38

43 of 43 minutes covered

Morning of Friday 20 October

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

sunrise 06:03  06:46 one muhūrta on
05:1505:3906:0306:2706:5107:1507:39

0 of 43 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 21:16 on Wed 18 Oct to 22:32 on Thu 19 Oct.

    1939-10-18T13:15:44Z → 1939-10-19T14:32:05Z

  2. 02

    Kāla

    The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:02–06:45 on the 19th, 06:03–06:46 on the 20th.

    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 43 of 43 minutes on the 19th and 0 of 43 on the 20th.

    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 27051 s

  5. 05

    Ruling

    Durgā Saptamī, Daqing, 1939: Thursday 19 October.

    confidence: determinate

Say it like this

In Daqing, Durgā Saptamī 1939 falls on Thursday 19 October. Saptamī runs from 21:16 on Wed 18 Oct to 22:32 on Thu 19 Oct and covers all of the first muhūrta after sunrise that morning.

ahargana.org/daqing/festivals/1939/durga-saptami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 19 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 19 Oct
compat-drikpanchangComparison profileThu 19 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 18thCoveredSunrise 19thCoveredRuled
Los Angeles05:16 → 06:3206:0045 min06:0131 min18 Oct
Chicago07:16 → 08:3206:060 min06:0744 min19 Oct
Jersey City08:16 → 09:3206:100 min06:1144 min19 Oct
Port of Spain09:16 → 10:3205:550 min05:5547 min19 Oct
London14:16 → 15:3207:280 min07:3042 min19 Oct
Durban15:16 → 16:3205:160 min05:1551 min19 Oct
Dubai17:16 → 18:3206:180 min06:1946 min19 Oct
Delhi18:46 → 20:0206:230 min06:2446 min19 Oct
Kolkata18:46 → 20:0205:340 min05:3446 min19 Oct
Singapore20:36 → 21:5206:080 min06:0848 min19 Oct
Sydney23:16 → 00:3205:120 min05:1152 min19 Oct
Suva01:16 → 02:3205:360 min05:3650 min19 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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