Ruling · Durgā Navamī · 1972

Tuesday 14 November

Boundaryin Lima, under the Rashtriya Panchang method. A threshold is only 2 min 54 s away. Say “contested”.

Decide it for

12°03′ S 77°02′ W · America/Lima · GeoNames 3936456

The two middays

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

Midday of Tuesday 14 November

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

madhyāhna begins 11:29  12:17 madhyāhna ends
Navamī begins 12:04:00
10:4111:0511:2911:5312:1712:4113:05

13 of 48 minutes covered, the last 13

Midday of Wednesday 15 November

Qualifies with 3 of 48 minutes. Not taken.

madhyāhna begins 11:29  12:17 madhyāhna ends
Navamī ends 11:31:46
10:4111:0511:2911:5312:1712:4113:05

3 of 48 minutes covered, the first 3

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 12:04 on Tue 14 Nov to 11:32 on Wed 15 Nov.

    1972-11-14T17:04:00Z → 1972-11-15T16:31:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 14th, 11:29–12:17 on the 15th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 13 of 48 minutes on the 14th and 3 of 48 on the 15th.

    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 174 s < 300 s

  5. 05

    Ruling

    Durgā Navamī, Lima, 1972: Tuesday 14 November.

    confidence: boundary (margin)

Say it like this

In Lima, Durgā Navamī 1972 falls on Tuesday 14 November. Navamī runs from 12:04 on Tue 14 Nov to 11:32 on Wed 15 Nov and covers 13 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 3 minutes; by the rule the first midday is taken. It is 2 min 54 s from a threshold: treat the date as contested.

ahargana.org/lima/festivals/1972/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 14 Nov
Ahargaṇa, classicalDisc centre, no refractionTue 14 Nov
compat-drikpanchangComparison profileTue 14 Nov
No institution has a recorded ruling for Lima.

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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles09:04 → 08:3211:1348 min11:140 min14 Nov
Chicago11:04 → 10:3211:1148 min11:110 min14 Nov
Jersey City12:04 → 11:3211:171 min11:1715 min14 Nov
Port of Spain13:04 → 12:3211:270 min11:2748 min15 Nov
London17:04 → 16:3211:210 min11:2148 min15 Nov
Durban19:04 → 18:3211:170 min11:1748 min15 Nov
Dubai21:04 → 20:3211:390 min11:3948 min15 Nov
Delhi22:34 → 22:0211:410 min11:4248 min15 Nov
Kolkata22:34 → 22:0210:570 min10:5748 min15 Nov
Singapore00:34 → 00:0211:550 min11:5548 min15 Nov
Sydney04:04 → 03:3212:160 min12:1648 min15 Nov
Suva05:04 → 04:3211:270 min11:2748 min15 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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