Ruling · Durgā Navamī · 2075

Saturday 16 November

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 528 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 15 November

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

0 of 48 minutes covered

Midday of Saturday 16 November

Taken. The only midday Navamī reaches.

madhyāhna begins 11:13  12:01 madhyāhna ends
10:2510:4911:1311:3712:0112:2512:49

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 22:16 on Fri 15 Nov to 20:50 on Sat 16 Nov.

    2075-11-15T16:16:02Z → 2075-11-16T14:49:36Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:13–12:01 on the 15th, 11:13–12:01 on the 16th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 15th and 48 of 48 on the 16th.

    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 31689 s

  5. 05

    Ruling

    Durgā Navamī, Chattogram, 2075: Saturday 16 November.

    confidence: determinate

Say it like this

In Chattogram, Durgā Navamī 2075 falls on Saturday 16 November. Navamī runs from 22:16 on Fri 15 Nov to 20:50 on Sat 16 Nov and covers all of madhyāhna that midday.

ahargana.org/chattogram/festivals/2075/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 16 Nov
Ahargaṇa, classicalDisc centre, no refractionSat 16 Nov
compat-drikpanchangComparison profileSat 16 Nov
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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles08:16 → 06:5011:1448 min11:140 min15 Nov
Chicago10:16 → 08:5011:1148 min11:110 min15 Nov
Jersey City11:16 → 09:5011:1748 min11:170 min15 Nov
Port of Spain12:16 → 10:5011:270 min11:270 min16 Nov
London16:16 → 14:5011:210 min11:2148 min16 Nov
Durban18:16 → 16:5011:170 min11:1748 min16 Nov
Dubai20:16 → 18:5011:390 min11:4048 min16 Nov
Delhi21:46 → 20:2011:420 min11:4248 min16 Nov
Kolkata21:46 → 20:2010:570 min10:5748 min16 Nov
Singapore00:16 → 22:5012:250 min12:2548 min16 Nov
Sydney03:16 → 01:5012:160 min12:1648 min16 Nov
Suva04:16 → 02:5011:270 min11:2748 min16 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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