Ruling · Durgā Navamī · 1955

Wednesday 23 November

Boundaryin Lucknow, under the Rashtriya Panchang method. A threshold is only 2 min 37 s away. Say “contested”.

Decide it for

26°50′ N 80°55′ E · Asia/Kolkata · GeoNames 1264733

The two middays

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

Midday of Wednesday 23 November

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

madhyāhna begins 11:28  12:16 madhyāhna ends
Navamī begins 11:25:47
10:4011:0411:2811:5212:1612:4013:04

48 of 48 minutes covered

Midday of Thursday 24 November

Qualifies with 14 of 48 minutes. Not taken.

madhyāhna begins 11:29  12:17 madhyāhna ends
Navamī ends 11:42:58
10:4111:0511:2911:5312:1712:4113:05

14 of 48 minutes covered, the first 14

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 11:26 on Wed 23 Nov to 11:43 on Thu 24 Nov.

    1955-11-23T05:55:48Z → 1955-11-24T06:12:59Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:28–12:16 on the 23rd, 11:29–12:17 on the 24th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 23rd and 14 of 48 on the 24th.

    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 157 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Lucknow, 1955: Wednesday 23 November.

    confidence: boundary (margin)

Say it like this

In Lucknow, Durgā Navamī 1955 falls on Wednesday 23 November. Navamī runs from 11:26 on Wed 23 Nov to 11:43 on Thu 24 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 14 minutes; by the rule the first midday is taken. It is 2 min 37 s from a threshold: treat the date as contested.

ahargana.org/lucknow/festivals/1955/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 23 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 23 Nov
compat-drikpanchangComparison profileWed 23 Nov
No institution has a recorded ruling for Lucknow.

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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles21:56 → 22:1311:1548 min11:150 min23 Nov
Chicago23:56 → 00:1311:1348 min11:130 min23 Nov
Jersey City00:56 → 01:1311:1848 min11:190 min23 Nov
Port of Spain01:56 → 02:1311:2848 min11:290 min23 Nov
London05:56 → 06:1311:2348 min11:230 min23 Nov
Durban07:56 → 08:1311:1848 min11:190 min23 Nov
Dubai09:56 → 10:1311:4148 min11:410 min23 Nov
Delhi11:26 → 11:4311:4348 min11:430 min23 Nov
Kolkata11:26 → 11:4310:5921 min10:5944 min23 Nov
Singapore13:26 → 13:4311:570 min11:5748 min24 Nov
Sydney15:56 → 16:1311:180 min11:1848 min24 Nov
Suva17:56 → 18:1311:290 min11:2948 min24 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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