Ruling · Durgā Navamī · 1913

Friday 7 November

Boundaryin Kabul, under the Rashtriya Panchang method. A threshold is only 1 min 28 s away. Say “contested”.

Decide it for

KabulDelhiKolkataSingaporeSydneyJersey City

34°32′ N 69°10′ E · Asia/Kabul · GeoNames 1138958

The two middays

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

Midday of Thursday 6 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 10:43  11:31 madhyāhna ends
Navamī begins 11:32:17
09:5510:1910:4311:0711:3111:5512:19

0 of 48 minutes covered

Midday of Friday 7 November

Taken. The only midday Navamī reaches.

madhyāhna begins 10:43  11:31 madhyāhna ends
09:5510:1910:4311:0711:3111:5512:19

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 11:32 on Thu 6 Nov to 13:52 on Fri 7 Nov.

    1913-11-06T07:32:17Z → 1913-11-07T09:52:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 10:43–11:31 on the 6th, 10:43–11:31 on the 7th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.

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

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 88 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Kabul, 1913: Friday 7 November.

    confidence: boundary (margin)

Say it like this

In Kabul, Durgā Navamī 1913 falls on Friday 7 November. Navamī runs from 11:32 on Thu 6 Nov to 13:52 on Fri 7 Nov and covers all of madhyāhna that midday. It is 1 min 28 s from a threshold: treat the date as contested.

ahargana.org/kabul/festivals/1913/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 7 Nov
compat-drikpanchangComparison profileThu 6 Nov
No institution has a recorded ruling for Kabul.

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 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles23:32 → 01:5211:1348 min11:130 min6 Nov
Chicago01:32 → 03:5211:1048 min11:100 min6 Nov
Jersey City02:32 → 04:5211:1648 min11:160 min6 Nov
Port of Spain03:32 → 05:5211:2648 min11:260 min6 Nov
London07:32 → 09:5211:2048 min11:200 min6 Nov
Durban09:32 → 11:5211:1648 min11:1636 min6 Nov
Dubai11:13 → 13:3311:1948 min11:1948 min6 Nov
Delhi13:02 → 15:2211:410 min11:4148 min7 Nov
Kolkata13:02 → 15:2210:560 min10:5648 min7 Nov
Singapore14:32 → 16:5211:240 min11:2448 min7 Nov
Sydney17:32 → 19:5211:150 min11:1548 min7 Nov
Suva19:27 → 21:4711:210 min11:2148 min7 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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