Ruling · Durgā Navamī · 1929

Sunday 10 November

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 12 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Sunday 10 November

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:00  11:48 madhyāhna ends
Navamī begins 11:11:19
10:1210:3611:0011:2411:4812:1212:36

36 of 48 minutes covered, the last 36

Midday of Monday 11 November

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:00  11:48 madhyāhna ends
10:1210:3611:0011:2411:4812:1212:36

48 of 48 minutes covered

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 11:11 on Sun 10 Nov to 12:51 on Mon 11 Nov.

    1929-11-10T03:11:20Z → 1929-11-11T04:50:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 10th, 11:00–11:48 on the 11th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 36 of 48 minutes on the 10th and 48 of 48 on the 11th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 700 s

  5. 05

    Ruling

    Durgā Navamī, Daqing, 1929: Sunday 10 November.

    confidence: determinate

Say it like this

In Daqing, Durgā Navamī 1929 falls on Sunday 10 November. Navamī runs from 11:11 on Sun 10 Nov to 12:51 on Mon 11 Nov and covers 36 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/daqing/festivals/1929/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 10 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 10 Nov
compat-drikpanchangComparison profileSun 10 Nov
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-navami · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 10thCoveredMadhyāhna 11thCoveredRuled
Los Angeles19:11 → 20:5111:1348 min11:130 min10 Nov
Chicago21:11 → 22:5111:1048 min11:100 min10 Nov
Jersey City22:11 → 23:5111:1648 min11:160 min10 Nov
Port of Spain23:11 → 00:5111:2648 min11:260 min10 Nov
London03:11 → 04:5111:2048 min11:200 min10 Nov
Durban05:11 → 06:5111:1648 min11:160 min10 Nov
Dubai07:11 → 08:5111:3948 min11:390 min10 Nov
Delhi08:41 → 10:2111:4148 min11:410 min10 Nov
Kolkata08:41 → 10:2110:5648 min10:560 min10 Nov
Singapore10:11 → 11:5111:2548 min11:2526 min10 Nov
Sydney13:11 → 14:5111:150 min11:1548 min11 Nov
Suva15:11 → 16:5111:260 min11:2648 min11 Nov
Profile · tradition
pac-rp@2026.1 · smarta
Rule
durga-navami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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