Ruling · Durgā Navamī · 2039

Thursday 24 November

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 5 min 37 s.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays

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

Midday of Wednesday 23 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:26  12:14 madhyāhna ends
Navamī begins 12:20:05
10:3811:0211:2611:5012:1412:3813:02

0 of 48 minutes covered

Midday of Thursday 24 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:27  12:15 madhyāhna ends
Navamī ends 11:54:50
10:3911:0311:2711:5112:1512:3913:03

28 of 48 minutes covered, the first 28

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 12:20 on Wed 23 Nov to 11:55 on Thu 24 Nov.

    2039-11-23T08:50:06Z → 2039-11-24T08:24:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 23rd, 11:27–12:15 on the 24th.

    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 23rd and 28 of 48 on the 24th.

    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 337 s

  5. 05

    Ruling

    Durgā Navamī, Tehran, 2039: Thursday 24 November.

    confidence: determinate

Say it like this

In Tehran, Durgā Navamī 2039 falls on Thursday 24 November. Navamī runs from 12:20 on Wed 23 Nov to 11:55 on Thu 24 Nov and covers 28 of 48 minutes of madhyāhna that midday.

ahargana.org/tehran/festivals/2039/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 24 Nov
Ahargaṇa, classicalDisc centre, no refractionThu 24 Nov
compat-drikpanchangComparison profileWed 23 Nov
No institution has a recorded ruling for Tehran.

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 23rdCoveredMadhyāhna 24thCoveredRuled
Los Angeles00:50 → 00:2511:1548 min11:160 min23 Nov
Chicago02:50 → 02:2511:1348 min11:130 min23 Nov
Jersey City03:50 → 03:2511:1948 min11:190 min23 Nov
Port of Spain04:50 → 04:2511:2848 min11:290 min23 Nov
London08:50 → 08:2511:2348 min11:230 min23 Nov
Durban10:50 → 10:2511:1848 min11:190 min23 Nov
Dubai12:50 → 12:2511:410 min11:4144 min24 Nov
Delhi14:20 → 13:5511:430 min11:4448 min24 Nov
Kolkata14:20 → 13:5510:590 min10:5948 min24 Nov
Singapore16:50 → 16:2512:270 min12:2748 min24 Nov
Sydney19:50 → 19:2512:180 min12:1848 min24 Nov
Suva20:50 → 20:2511:290 min11:2948 min24 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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