Ruling · Durgā Navamī · 2003

Sunday 2 November

Boundaryin Buenos Aires, under the Rashtriya Panchang method. A threshold is only 1 min 12 s away. Say “contested”.

Decide it for

Buenos AiresDelhiKolkataSingaporeSydneyJersey City

34°37′ S 58°23′ W · America/Argentina/Buenos_Aires · GeoNames 3435910

The two middays

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

Midday of Saturday 1 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:13  13:01 madhyāhna ends
Navamī begins 13:02:35
11:2511:4912:1312:3713:0113:2513:49

0 of 48 minutes covered

Midday of Sunday 2 November

Taken. The only midday Navamī reaches.

madhyāhna begins 12:13  13:01 madhyāhna ends
Navamī ends 12:47:48
11:2511:4912:1312:3713:0113:2513:49

34 of 48 minutes covered, the first 34

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 13:03 on Sat 1 Nov to 12:48 on Sun 2 Nov.

    2003-11-01T16:02:36Z → 2003-11-02T15:47:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 1st, 12:13–13:01 on the 2nd.

    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 1st and 34 of 48 on the 2nd.

    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 72 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Buenos Aires, 2003: Sunday 2 November.

    confidence: boundary (margin)

Say it like this

In Buenos Aires, Durgā Navamī 2003 falls on Sunday 2 November. Navamī runs from 13:03 on Sat 1 Nov to 12:48 on Sun 2 Nov and covers 34 of 48 minutes of madhyāhna that midday. It is 1 min 12 s from a threshold: treat the date as contested.

ahargana.org/buenos-aires/festivals/2003/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 2 Nov
compat-drikpanchangComparison profileSat 1 Nov
No institution has a recorded ruling for Buenos Aires.

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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles08:03 → 07:4811:1248 min11:120 min1 Nov
Chicago10:03 → 09:4811:1048 min11:100 min1 Nov
Jersey City11:03 → 10:4811:1648 min11:160 min1 Nov
Port of Spain12:03 → 11:4811:2611 min11:2622 min1 Nov
London16:03 → 15:4811:200 min11:2048 min2 Nov
Durban18:03 → 17:4811:160 min11:1648 min2 Nov
Dubai20:03 → 19:4811:380 min11:3848 min2 Nov
Delhi21:33 → 21:1811:410 min11:4048 min2 Nov
Kolkata21:33 → 21:1810:560 min10:5648 min2 Nov
Singapore00:03 → 23:4812:240 min12:2448 min2 Nov
Sydney03:03 → 02:4812:150 min12:1548 min2 Nov
Suva04:03 → 03:4811:260 min11:2648 min2 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

About Ahargaṇa