Ruling · Durgā Navamī · 1977

Friday 18 November

Determinatein Aleppo, under the Rashtriya Panchang method. Clear of every threshold by 12 minutes.

Decide it for

36°12′ N 37°10′ E · Asia/Damascus · GeoNames 170063

The two middays

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

Midday of Friday 18 November

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

madhyāhna begins 10:52  11:40 madhyāhna ends
Navamī begins 11:26:12
10:0410:2810:5211:1611:4012:0412:28

14 of 48 minutes covered, the last 14

Midday of Saturday 19 November

Qualifies with 12 of 48 minutes. Not taken.

madhyāhna begins 10:53  11:41 madhyāhna ends
Navamī ends 11:04:07
10:0510:2910:5311:1711:4112:0512:29

12 of 48 minutes covered, the first 12

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 11:26 on Fri 18 Nov to 11:04 on Sat 19 Nov.

    1977-11-18T09:26:13Z → 1977-11-19T09:04:07Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 10:52–11:40 on the 18th, 10:53–11:41 on the 19th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 14 of 48 minutes on the 18th and 12 of 48 on the 19th.

    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 691 s

  5. 05

    Ruling

    Durgā Navamī, Aleppo, 1977: Friday 18 November.

    confidence: determinate

Say it like this

In Aleppo, Durgā Navamī 1977 falls on Friday 18 November. Navamī runs from 11:26 on Fri 18 Nov to 11:04 on Sat 19 Nov and covers 14 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 12 minutes; by the rule the first midday is taken.

ahargana.org/aleppo/festivals/1977/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 18 Nov
Ahargaṇa, classicalDisc centre, no refractionFri 18 Nov
compat-drikpanchangComparison profileFri 18 Nov
No institution has a recorded ruling for Aleppo.

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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles01:26 → 01:0411:1448 min11:140 min18 Nov
Chicago03:26 → 03:0411:1248 min11:120 min18 Nov
Jersey City04:26 → 04:0411:1748 min11:180 min18 Nov
Port of Spain05:26 → 05:0411:2748 min11:280 min18 Nov
London09:26 → 09:0411:2148 min11:220 min18 Nov
Durban11:26 → 11:0411:1739 min11:170 min18 Nov
Dubai13:26 → 13:0411:400 min11:4048 min19 Nov
Delhi14:56 → 14:3411:420 min11:4248 min19 Nov
Kolkata14:56 → 14:3410:580 min10:5848 min19 Nov
Singapore16:56 → 16:3411:560 min11:5648 min19 Nov
Sydney20:26 → 20:0412:170 min12:1748 min19 Nov
Suva21:26 → 21:0411:280 min11:2848 min19 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