Ruling · Durgā Navamī · 1986

Sunday 9 November

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 118 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 Sunday 9 November

Taken. The only midday Navamī reaches.

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

48 of 48 minutes covered

Midday of Monday 10 November

Navamī is absent from madhyāhna. Not taken.

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

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 09:29 on Sun 9 Nov to 08:31 on Mon 10 Nov.

    1986-11-09T08:29:01Z → 1986-11-10T07:31:10Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 9th, 11:27–12:15 on the 10th.

    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 9th and 0 of 48 on the 10th.

    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 7076 s

  5. 05

    Ruling

    Durgā Navamī, Luanda, 1986: Sunday 9 November.

    confidence: determinate

Say it like this

In Luanda, Durgā Navamī 1986 falls on Sunday 9 November. Navamī runs from 09:29 on Sun 9 Nov to 08:31 on Mon 10 Nov and covers all of madhyāhna that midday.

ahargana.org/luanda/festivals/1986/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 9 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 9 Nov
compat-drikpanchangComparison profileSun 9 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 9thCoveredMadhyāhna 10thCoveredRuled
Los Angeles00:29 → 23:3111:1348 min11:130 min9 Nov
Chicago02:29 → 01:3111:1048 min11:100 min9 Nov
Jersey City03:29 → 02:3111:1648 min11:160 min9 Nov
Port of Spain04:29 → 03:3111:2648 min11:260 min9 Nov
London08:29 → 07:3111:2048 min11:200 min9 Nov
Durban10:29 → 09:3111:1648 min11:160 min9 Nov
Dubai12:29 → 11:3111:380 min11:390 min10 Nov
Delhi13:59 → 13:0111:410 min11:4148 min10 Nov
Kolkata13:59 → 13:0110:560 min10:5648 min10 Nov
Singapore16:29 → 15:3112:240 min12:2448 min10 Nov
Sydney19:29 → 18:3112:150 min12:1548 min10 Nov
Suva20:29 → 19:3111:260 min11:2648 min10 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