Ruling · Durgā Navamī · 1932

Saturday 5 November

Boundaryin Phoenix, under the Rashtriya Panchang method. A threshold is only 0 min 34 s away. Say “contested”.

Decide it for

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two middays

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

Midday of Saturday 5 November

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

madhyāhna begins 11:48  12:36 madhyāhna ends
Navamī begins 11:47:13
11:0011:2411:4812:1212:3613:0013:24

48 of 48 minutes covered

Midday of Sunday 6 November

Qualifies with 27 of 48 minutes. Not taken.

madhyāhna begins 11:48  12:36 madhyāhna ends
Navamī ends 12:14:49
11:0011:2411:4812:1212:3613:0013:24

27 of 48 minutes covered, the first 27

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 11:47 on Sat 5 Nov to 12:15 on Sun 6 Nov.

    1932-11-05T18:47:13Z → 1932-11-06T19:14:49Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 5th, 11:48–12:36 on the 6th.

    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 5th and 27 of 48 on the 6th.

    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 34 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Phoenix, 1932: Saturday 5 November.

    confidence: boundary (margin)

Say it like this

In Phoenix, Durgā Navamī 1932 falls on Saturday 5 November. Navamī runs from 11:47 on Sat 5 Nov to 12:15 on Sun 6 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 27 minutes; by the rule the first midday is taken. It is 0 min 34 s from a threshold: treat the date as contested.

ahargana.org/phoenix/festivals/1932/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 5 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 5 Nov
compat-drikpanchangComparison profileSat 5 Nov
No institution has a recorded ruling for Phoenix.

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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles10:47 → 11:1511:1248 min11:132 min5 Nov
Chicago12:47 → 13:1511:100 min11:1048 min6 Nov
Jersey City13:47 → 14:1511:160 min11:1648 min6 Nov
Port of Spain14:47 → 15:1511:260 min11:2648 min6 Nov
London18:47 → 19:1511:200 min11:2048 min6 Nov
Durban20:47 → 21:1511:160 min11:1648 min6 Nov
Dubai22:47 → 23:1511:380 min11:3848 min6 Nov
Delhi00:17 → 00:4511:410 min11:4148 min6 Nov
Kolkata00:17 → 00:4510:560 min10:5648 min6 Nov
Singapore01:47 → 02:1511:240 min11:2448 min6 Nov
Sydney04:47 → 05:1511:150 min11:1548 min6 Nov
Suva06:47 → 07:1511:260 min11:2648 min6 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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