Ruling · Durgā Navamī · 2074

Sunday 28 October

Boundaryin Dakar, under the Rashtriya Panchang method. A threshold is only 4 min 50 s away. Say “contested”.

Decide it for

DakarDelhiKolkataSingaporeSydneyJersey City

14°42′ N 17°27′ W · Africa/Dakar · GeoNames 2253354

The two middays

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

Midday of Saturday 27 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:30  13:18 madhyāhna ends
Navamī begins 13:46:18
11:4212:0612:3012:5413:1813:4214:06

0 of 48 minutes covered

Midday of Sunday 28 October

Taken. The only midday Navamī reaches.

madhyāhna begins 12:30  13:18 madhyāhna ends
Navamī ends 13:12:46
11:4212:0612:3012:5413:1813:4214:06

43 of 48 minutes covered, the first 43

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 13:46 on Sat 27 Oct to 13:13 on Sun 28 Oct.

    2074-10-27T13:46:19Z → 2074-10-28T13:12:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:30–13:18 on the 27th, 12:30–13:18 on the 28th.

    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 27th and 43 of 48 on the 28th.

    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 290 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Dakar, 2074: Sunday 28 October.

    confidence: boundary (margin)

Say it like this

In Dakar, Durgā Navamī 2074 falls on Sunday 28 October. Navamī runs from 13:46 on Sat 27 Oct to 13:13 on Sun 28 Oct and covers 43 of 48 minutes of madhyāhna that midday. It is 4 min 50 s from a threshold: treat the date as contested.

ahargana.org/dakar/festivals/2074/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 28 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 28 Oct
compat-drikpanchangComparison profileSat 27 Oct
No institution has a recorded ruling for Dakar.

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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles06:46 → 06:1312:1348 min12:130 min27 Oct
Chicago08:46 → 08:1312:1048 min12:100 min27 Oct
Jersey City09:46 → 09:1312:1648 min12:160 min27 Oct
Port of Spain09:46 → 09:1311:2648 min11:260 min27 Oct
London14:46 → 13:1312:200 min11:2048 min28 Oct
Durban15:46 → 15:1311:160 min11:1648 min28 Oct
Dubai17:46 → 17:1311:390 min11:3948 min28 Oct
Delhi19:16 → 18:4311:410 min11:4148 min28 Oct
Kolkata19:16 → 18:4310:560 min10:5648 min28 Oct
Singapore21:46 → 21:1312:250 min12:2548 min28 Oct
Sydney00:46 → 00:1312:150 min12:1548 min28 Oct
Suva01:46 → 01:1311:260 min11:2648 min28 Oct
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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