Ruling · Durgā Navamī · 1966

Sunday 20 November

Determinatein Recife, under the Rashtriya Panchang method. Clear of every threshold by 13 minutes.

Decide it for

RecifeDelhiKolkataSingaporeSydneyJersey City

8°03′ S 34°53′ W · America/Recife · GeoNames 3390760

The two middays

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

Midday of Sunday 20 November

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

madhyāhna begins 11:41  12:29 madhyāhna ends
Navamī begins 11:28:01
10:5311:1711:4112:0512:2912:5313:17

48 of 48 minutes covered

Midday of Monday 21 November

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

48 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 11:28 on Sun 20 Nov to 13:57 on Mon 21 Nov.

    1966-11-20T13:28:02Z → 1966-11-21T15:57:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 20th, 11:41–12:29 on the 21st.

    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 20th and 48 of 48 on the 21st.

    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 788 s

  5. 05

    Ruling

    Durgā Navamī, Recife, 1966: Sunday 20 November.

    confidence: determinate

Say it like this

In Recife, Durgā Navamī 1966 falls on Sunday 20 November. Navamī runs from 11:28 on Sun 20 Nov to 13:57 on Mon 21 Nov and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/recife/festivals/1966/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 20 Nov
Ahargaṇa, classicalDisc centre, no refractionSun 20 Nov
compat-drikpanchangComparison profileSun 20 Nov
No institution has a recorded ruling for Recife.

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 20thCoveredMadhyāhna 21stCoveredRuled
Los Angeles05:28 → 07:5711:1448 min11:150 min20 Nov
Chicago07:28 → 09:5711:1248 min11:120 min20 Nov
Jersey City08:28 → 10:5711:1848 min11:180 min20 Nov
Port of Spain09:28 → 11:5711:2848 min11:2829 min20 Nov
London13:28 → 15:5711:220 min11:2248 min21 Nov
Durban15:28 → 17:5711:180 min11:1848 min21 Nov
Dubai17:28 → 19:5711:400 min11:4048 min21 Nov
Delhi18:58 → 21:2711:420 min11:4348 min21 Nov
Kolkata18:58 → 21:2710:580 min10:5848 min21 Nov
Singapore20:58 → 23:2711:560 min11:5648 min21 Nov
Sydney23:28 → 01:5711:170 min11:1748 min21 Nov
Suva01:28 → 03:5711:280 min11:2848 min21 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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