Ruling · Durgā Navamī · 2048

Friday 13 November

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 5 min 15 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 Friday 13 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:24  12:12 madhyāhna ends
Navamī begins 11:19:15
10:3611:0011:2411:4812:1212:3613:00

48 of 48 minutes covered

Midday of Saturday 14 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:25  12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01

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 11:19 on Fri 13 Nov to 10:22 on Sat 14 Nov.

    2048-11-13T07:49:15Z → 2048-11-14T06:52:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 13th, 11:25–12:13 on the 14th.

    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 13th and 0 of 48 on the 14th.

    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 315 s

  5. 05

    Ruling

    Durgā Navamī, Tehran, 2048: Friday 13 November.

    confidence: determinate

Say it like this

In Tehran, Durgā Navamī 2048 falls on Friday 13 November. Navamī runs from 11:19 on Fri 13 Nov to 10:22 on Sat 14 Nov and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2048/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 13 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 13 Nov
compat-drikpanchangComparison profileFri 13 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 13thCoveredMadhyāhna 14thCoveredRuled
Los Angeles23:49 → 22:5211:1348 min11:130 min13 Nov
Chicago01:49 → 00:5211:1148 min11:110 min13 Nov
Jersey City02:49 → 01:5211:1748 min11:170 min13 Nov
Port of Spain03:49 → 02:5211:2648 min11:270 min13 Nov
London07:49 → 06:5211:2148 min11:210 min13 Nov
Durban09:49 → 08:5211:1648 min11:170 min13 Nov
Dubai11:49 → 10:5211:3938 min11:390 min13 Nov
Delhi13:19 → 12:2211:410 min11:4141 min14 Nov
Kolkata13:19 → 12:2210:570 min10:5748 min14 Nov
Singapore15:49 → 14:5212:250 min12:2548 min14 Nov
Sydney18:49 → 17:5212:160 min12:1648 min14 Nov
Suva19:49 → 18:5211:270 min11:2748 min14 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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