Ruling · Durgā Navamī · 2071

Saturday 31 October

Determinatein Manaus, under the Rashtriya Panchang method. Clear of every threshold by 17 minutes.

Decide it for

ManausDelhiKolkataSingaporeSydneyJersey City

3°06′ S 60°02′ W · America/Manaus · GeoNames 3663517

The two middays

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

Midday of Saturday 31 October

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 11:20  12:08 madhyāhna ends
10:3210:5611:2011:4412:0812:3212:56

48 of 48 minutes covered

Midday of Sunday 1 November

Qualifies with 31 of 48 minutes. Not taken.

madhyāhna begins 11:20  12:08 madhyāhna ends
Navamī ends 11:51:16
10:3210:5611:2011:4412:0812:3212:56

31 of 48 minutes covered, the first 31

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 09:25 on Sat 31 Oct to 11:51 on Sun 1 Nov.

    2071-10-31T13:24:34Z → 2071-11-01T15:51:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:20–12:08 on the 31st, 11:20–12:08 on the 1st.

    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 31st and 31 of 48 on the 1st.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 993 s

  5. 05

    Ruling

    Durgā Navamī, Manaus, 2071: Saturday 31 October.

    confidence: determinate

Say it like this

In Manaus, Durgā Navamī 2071 falls on Saturday 31 October. Navamī runs from 09:25 on Sat 31 Oct to 11:51 on Sun 1 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 31 minutes; by the rule the first midday is taken.

ahargana.org/manaus/festivals/2071/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 31 Oct
compat-drikpanchangComparison profileSat 31 Oct
No institution has a recorded ruling for Manaus.

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 31stCoveredMadhyāhna 1stCoveredRuled
Los Angeles06:25 → 07:5112:1348 min11:120 min31 Oct
Chicago08:25 → 09:5112:1048 min11:100 min31 Oct
Jersey City09:25 → 10:5112:1648 min11:160 min31 Oct
Port of Spain09:25 → 11:5111:2648 min11:2626 min31 Oct
London13:25 → 15:5111:200 min11:2048 min1 Nov
Durban15:25 → 17:5111:160 min11:1648 min1 Nov
Dubai17:25 → 19:5111:380 min11:3848 min1 Nov
Delhi18:55 → 21:2111:410 min11:4148 min1 Nov
Kolkata18:55 → 21:2110:560 min10:5648 min1 Nov
Singapore21:25 → 23:5112:240 min12:2448 min1 Nov
Sydney00:25 → 02:5112:150 min12:1548 min1 Nov
Suva01:25 → 03:5111:260 min11:2648 min1 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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