Ruling · Durgā Navamī · 1960

Friday 28 October

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 638 minutes.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two middays

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

Midday of Friday 28 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:12  12:00 madhyāhna ends
10:2410:4811:1211:3612:0012:2412:48

48 of 48 minutes covered

Midday of Saturday 29 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:12  12:00 madhyāhna ends
10:2410:4811:1211:3612:0012:2412:48

0 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 00:35 on Fri 28 Oct to 22:47 on Fri 28 Oct.

    1960-10-27T18:34:31Z → 1960-10-28T16:46:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:12–12:00 on the 28th, 11:12–12:00 on the 29th.

    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 28th and 0 of 48 on the 29th.

    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 38271 s

  5. 05

    Ruling

    Durgā Navamī, Chattogram, 1960: Friday 28 October.

    confidence: determinate

Say it like this

In Chattogram, Durgā Navamī 1960 falls on Friday 28 October. Navamī runs from 00:35 on Fri 28 Oct to 22:47 on Fri 28 Oct and covers all of madhyāhna that midday.

ahargana.org/chattogram/festivals/1960/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 28 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 28 Oct
compat-drikpanchangComparison profileFri 28 Oct
No institution has a recorded ruling for Chattogram.

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 Angeles10:35 → 08:4711:1348 min11:130 min27 Oct
Chicago13:35 → 11:4712:100 min12:100 min28 Oct
Jersey City14:35 → 12:4712:160 min12:1631 min28 Oct
Port of Spain14:35 → 12:4711:260 min11:2648 min28 Oct
London18:35 → 16:4711:200 min11:2048 min28 Oct
Durban20:35 → 18:4711:160 min11:1648 min28 Oct
Dubai22:35 → 20:4711:390 min11:3848 min28 Oct
Delhi00:05 → 22:1711:410 min11:4148 min28 Oct
Kolkata00:05 → 22:1710:560 min10:5648 min28 Oct
Singapore02:05 → 00:1711:550 min11:5448 min28 Oct
Sydney04:35 → 02:4711:150 min11:1548 min28 Oct
Suva06:35 → 04:4711:260 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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