Ruling · Durgā Navamī · 2035

Thursday 8 November

Boundaryin Phoenix, under the Rashtriya Panchang method. A threshold is only 4 min 56 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 Thursday 8 November

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

madhyāhna begins 11:48  12:36 madhyāhna ends
Navamī begins 11:52:47
11:0011:2411:4812:1212:3613:0013:24

43 of 48 minutes covered, the last 43

Midday of Friday 9 November

Qualifies with 48 of 48 minutes. Not taken.

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

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 11:53 on Thu 8 Nov to 13:29 on Fri 9 Nov.

    2035-11-08T18:52:47Z → 2035-11-09T20:29:29Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 8th, 11:48–12:36 on the 9th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 43 of 48 minutes on the 8th and 48 of 48 on the 9th.

    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 296 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Phoenix, 2035: Thursday 8 November.

    confidence: boundary (margin)

Say it like this

In Phoenix, Durgā Navamī 2035 falls on Thursday 8 November. Navamī runs from 11:53 on Thu 8 Nov to 13:29 on Fri 9 Nov and covers 43 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken. It is 4 min 56 s from a threshold: treat the date as contested.

ahargana.org/phoenix/festivals/2035/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 8 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 8 Nov
compat-drikpanchangComparison profileThu 8 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles10:53 → 12:2911:1348 min11:1348 min8 Nov
Chicago12:53 → 14:2911:100 min11:1048 min9 Nov
Jersey City13:53 → 15:2911:160 min11:1648 min9 Nov
Port of Spain14:53 → 16:2911:260 min11:2648 min9 Nov
London18:53 → 20:2911:200 min11:2048 min9 Nov
Durban20:53 → 22:2911:160 min11:1648 min9 Nov
Dubai22:53 → 00:2911:380 min11:3848 min9 Nov
Delhi00:23 → 01:5911:410 min11:4148 min9 Nov
Kolkata00:23 → 01:5910:560 min10:5648 min9 Nov
Singapore02:53 → 04:2912:240 min12:2448 min9 Nov
Sydney05:53 → 07:2912:150 min12:1548 min9 Nov
Suva06:53 → 08:2911:260 min11:2648 min9 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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