Ruling · Durgā Navamī · 1985

Wednesday 20 November

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 99 minutes.

Decide it for

PhoenixDelhiKolkataSingaporeSydneyJersey City

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 Tuesday 19 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

0 of 48 minutes covered

Midday of Wednesday 20 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:50  12:38 madhyāhna ends
11:0211:2611:5012:1412:3813:0213:26

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 14:17 on Tue 19 Nov to 15:18 on Wed 20 Nov.

    1985-11-19T21:16:58Z → 1985-11-20T22:17:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:50–12:38 on the 19th, 11:50–12:38 on the 20th.

    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 19th and 48 of 48 on the 20th.

    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 5960 s

  5. 05

    Ruling

    Durgā Navamī, Phoenix, 1985: Wednesday 20 November.

    confidence: determinate

Say it like this

In Phoenix, Durgā Navamī 1985 falls on Wednesday 20 November. Navamī runs from 14:17 on Tue 19 Nov to 15:18 on Wed 20 Nov and covers all of madhyāhna that midday.

ahargana.org/phoenix/festivals/1985/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 20 Nov
Ahargaṇa, classicalDisc centre, no refractionWed 20 Nov
compat-drikpanchangComparison profileWed 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles13:17 → 14:1811:140 min11:1548 min20 Nov
Chicago15:17 → 16:1811:120 min11:1248 min20 Nov
Jersey City16:17 → 17:1811:180 min11:1848 min20 Nov
Port of Spain17:17 → 18:1811:270 min11:2848 min20 Nov
London21:17 → 22:1811:220 min11:2248 min20 Nov
Durban23:17 → 00:1811:170 min11:1848 min20 Nov
Dubai01:17 → 02:1811:400 min11:4048 min20 Nov
Delhi02:47 → 03:4811:420 min11:4348 min20 Nov
Kolkata02:47 → 03:4810:580 min10:5848 min20 Nov
Singapore05:17 → 06:1812:260 min12:2648 min20 Nov
Sydney08:17 → 09:1812:170 min12:1748 min20 Nov
Suva09:17 → 10:1811:280 min11:2848 min20 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