Ruling · Vijayā Daśamī (Dussehra) · 1908

Monday 5 October

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 93 minutes.

Decide it for

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

The two days

A tick is five ghaṭīs, two hours. The day time is sunrise to sunset.

Day of Sunday 4 October

Daśamī with Śravaṇa is absent from the day time. Not taken.

05:38 sunrisesunset 17:31
05:1407:1409:1411:1413:1415:1417:1419:14

0 of 713 minutes covered

Day of Monday 5 October

Taken. The only day Daśamī with Śravaṇa reaches.

05:38 sunrisesunset 17:30
Daśamī ends 19:03:03
05:1407:1409:1411:1413:1415:1417:1419:14

712 of 712 minutes covered

Daśamī and Śravaṇa togetherThe day time, the window the rule readsThe instant they come together or part

How it was decided

  1. 01

    Aṅga

    Daśamī runs from 21:28 on Sun 4 Oct to 19:03 on Mon 5 Oct, and Śravaṇa from 03:30 on Mon 5 Oct to 01:42 on Tue 6 Oct. They are together from 03:30 on Mon 5 Oct to 19:03 on Mon 5 Oct.

    1908-10-04T21:36:53Z → 1908-10-05T13:09:43Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 05:38–17:31 on the 4th, 05:38–17:30 on the 5th.

    daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 0 of 713 minutes on the 4th and 712 of 712 on the 5th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one day qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 5571 s

  5. 05

    Ruling

    Vijayā Daśamī, Chattogram, 1908: Monday 5 October.

    confidence: determinate

Say it like this

In Chattogram, Vijayā Daśamī (Dussehra) 1908 falls on Monday 5 October. Daśamī runs from 21:28 on Sun 4 Oct to 19:03 on Mon 5 Oct and is with Śravaṇa in the day time that day, for 712 minutes.

ahargana.org/chattogram/festivals/1908/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 5 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 5 Oct
compat-drikpanchangComparison profileMon 5 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/vijaya-dashami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Daśamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
First
With Śravaṇa in the day time

“S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDaśamī with ŚravaṇaSunrise 4thCoveredSunrise 5thCoveredRuled
Los Angeles13:37 → 05:1005:50236 min05:500 min4 Oct
Chicago15:37 → 07:1005:51110 min05:5278 min4 Oct
Jersey City16:37 → 08:1005:5657 min05:57133 min5 Oct
Port of Spain17:37 → 09:1005:5518 min05:55195 min5 Oct
London21:37 → 13:1006:060 min06:07423 min5 Oct
Durban23:37 → 15:1005:320 min05:30579 min5 Oct
Dubai01:18 → 16:5105:530 min05:53657 min5 Oct
Delhi03:07 → 18:4006:150 min06:16707 min5 Oct
Kolkata03:07 → 18:4005:290 min05:29711 min5 Oct
Singapore04:37 → 20:1005:510 min05:51725 min5 Oct
Sydney07:37 → 23:1005:300 min05:28623 min5 Oct
Suva09:32 → 01:0505:420 min05:41507 min5 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vijaya-dashami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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