Ruling · Durgā Navamī · 2072

Friday 18 November

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 145 minutes.

Decide it for

LuandaDelhiKolkataSingaporeSydneyJersey City

8°50′ S 13°14′ E · Africa/Luanda · GeoNames 2240449

The two middays

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

Midday of Friday 18 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:29  12:17 madhyāhna ends
10:4111:0511:2911:5312:1712:4113:05

48 of 48 minutes covered

Midday of Saturday 19 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:29  12:17 madhyāhna ends
10:4111:0511:2911:5312:1712:4113:05

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 06:21 on Fri 18 Nov to 09:03 on Sat 19 Nov.

    2072-11-18T05:21:25Z → 2072-11-19T08:03:23Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 18th, 11:29–12:17 on the 19th.

    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 18th and 0 of 48 on the 19th.

    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 8724 s

  5. 05

    Ruling

    Durgā Navamī, Luanda, 2072: Friday 18 November.

    confidence: determinate

Say it like this

In Luanda, Durgā Navamī 2072 falls on Friday 18 November. Navamī runs from 06:21 on Fri 18 Nov to 09:03 on Sat 19 Nov and covers all of madhyāhna that midday.

ahargana.org/luanda/festivals/2072/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 18 Nov
compat-drikpanchangComparison profileFri 18 Nov
No institution has a recorded ruling for Luanda.

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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles21:21 → 00:0311:1448 min11:150 min18 Nov
Chicago23:21 → 02:0311:1248 min11:120 min18 Nov
Jersey City00:21 → 03:0311:1848 min11:180 min18 Nov
Port of Spain01:21 → 04:0311:2848 min11:280 min18 Nov
London05:21 → 08:0311:2248 min11:220 min18 Nov
Durban07:21 → 10:0311:1748 min11:180 min18 Nov
Dubai09:21 → 12:0311:4048 min11:4023 min18 Nov
Delhi10:51 → 13:3311:4248 min11:4348 min18 Nov
Kolkata10:51 → 13:3310:5848 min10:5848 min18 Nov
Singapore13:21 → 16:0312:260 min12:2648 min19 Nov
Sydney16:21 → 19:0312:170 min12:1748 min19 Nov
Suva17:21 → 20:0311:280 min11:2848 min19 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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