Ruling · Vijayā Daśamī (Dussehra) · 1913

Thursday 9 October

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 238 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 Wednesday 8 October

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

05:39 sunrisesunset 17:27
05:1507:1509:1511:1513:1515:1517:1519:15

0 of 708 minutes covered

Day of Thursday 9 October

Taken. The only day Daśamī with Śravaṇa reaches.

05:40 sunrisesunset 17:26
05:1607:1609:1611:1613:1615:1617:1619:16

707 of 707 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 21:25 on Wed 8 Oct to 23:23 on Thu 9 Oct, and Śravaṇa from 21:14 on Wed 8 Oct to 23:44 on Thu 9 Oct. They are together from 21:25 on Wed 8 Oct to 23:23 on Thu 9 Oct.

    1913-10-08T15:32:18Z → 1913-10-09T17:29:52Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 05:39–17:27 on the 8th, 05:40–17:26 on the 9th.

    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 708 minutes on the 8th and 707 of 707 on the 9th.

    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 14280 s

  5. 05

    Ruling

    Vijayā Daśamī, Chattogram, 1913: Thursday 9 October.

    confidence: determinate

Say it like this

In Chattogram, Vijayā Daśamī (Dussehra) 1913 falls on Thursday 9 October. Daśamī runs from 21:25 on Wed 8 Oct to 23:23 on Thu 9 Oct and is with Śravaṇa in the day time that day, for 707 minutes.

ahargana.org/chattogram/festivals/1913/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 9 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 9 Oct
compat-drikpanchangComparison profileThu 9 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 8thCoveredSunrise 9thCoveredRuled
Los Angeles07:32 → 09:3005:53596 min05:53217 min8 Oct
Chicago09:32 → 11:3005:55469 min05:56334 min8 Oct
Jersey City10:32 → 12:3006:00415 min06:01389 min8 Oct
Port of Spain11:32 → 13:3005:55380 min05:55455 min9 Oct
London15:32 → 17:3006:12111 min06:14668 min9 Oct
Durban17:32 → 19:3005:2728 min05:26755 min9 Oct
Dubai19:13 → 21:1105:550 min05:55704 min9 Oct
Delhi21:02 → 23:0006:180 min06:18700 min9 Oct
Kolkata21:02 → 23:0005:300 min05:31707 min9 Oct
Singapore22:32 → 00:3005:500 min05:50725 min9 Oct
Sydney01:32 → 03:3005:240 min05:23760 min9 Oct
Suva03:27 → 05:2505:390 min05:38742 min9 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

About Ahargaṇa