Ruling · Durgā Navamī · 1912

Sunday 17 November

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 265 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 Sunday 17 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

48 of 48 minutes covered

Midday of Monday 18 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:49  12:37 madhyāhna ends
11:0111:2511:4912:1312:3713:0113:25

0 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 05:00 on Sun 17 Nov to 07:24 on Mon 18 Nov.

    1912-11-17T12:00:00Z → 1912-11-18T14:24:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 17th, 11:49–12:37 on the 18th.

    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 17th and 0 of 48 on the 18th.

    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 15917 s

  5. 05

    Ruling

    Durgā Navamī, Phoenix, 1912: Sunday 17 November.

    confidence: determinate

Say it like this

In Phoenix, Durgā Navamī 1912 falls on Sunday 17 November. Navamī runs from 05:00 on Sun 17 Nov to 07:24 on Mon 18 Nov and covers all of madhyāhna that midday.

ahargana.org/phoenix/festivals/1912/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 17 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 17 Nov
compat-drikpanchangComparison profileSun 17 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 17thCoveredMadhyāhna 18thCoveredRuled
Los Angeles04:00 → 06:2411:1448 min11:140 min17 Nov
Chicago06:00 → 08:2411:1148 min11:120 min17 Nov
Jersey City07:00 → 09:2411:1748 min11:170 min17 Nov
Port of Spain08:00 → 10:2411:2748 min11:270 min17 Nov
London12:00 → 14:2411:219 min11:2148 min17 Nov
Durban14:00 → 16:2411:170 min11:1748 min18 Nov
Dubai15:41 → 18:0511:210 min11:2148 min18 Nov
Delhi17:30 → 19:5411:420 min11:4248 min18 Nov
Kolkata17:30 → 19:5410:570 min10:5848 min18 Nov
Singapore19:00 → 21:2411:260 min11:2648 min18 Nov
Sydney22:00 → 00:2411:160 min11:1748 min18 Nov
Suva23:55 → 02:1911:220 min11:2348 min18 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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