Ruling · Vijayā Daśamī (Daśaharā) · 2025

Thursday 2 October

Determinatein Chicago, under the Rashtriya Panchang method. Clear of every threshold by 112 minutes.

Decide it for

41°51′ N 87°39′ W · America/Chicago · GeoNames 4887398

The two days

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

Day of Wednesday 1 October

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

06:48 sunrisesunset 18:31
06:2408:2410:2412:2414:2416:2418:2420:24

0 of 703 minutes covered

Day of Thursday 2 October

Taken. The only day Daśamī with Śravaṇa reaches.

06:49 sunrisesunset 18:30
Daśamī ends 08:41:28
06:2508:2510:2512:2514:2516:2518:2520:25

112 of 700 minutes covered, the first 112

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 08:32 on Wed 1 Oct to 08:41 on Thu 2 Oct, and Śravaṇa from 22:43 on Wed 1 Oct to 23:05 on Thu 2 Oct. They are together from 22:43 on Wed 1 Oct to 08:41 on Thu 2 Oct.

    2025-10-02T03:43:28Z → 2025-10-02T13:41:28Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 06:48–18:31 on the 1st, 06:49–18:30 on the 2nd.

    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 703 minutes on the 1st and 112 of 700 on the 2nd.

    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 6734 s

  5. 05

    Ruling

    Vijayā Daśamī, Chicago, 2025: Thursday 2 October.

    confidence: determinate

Say it like this

In Chicago, Vijayā Daśamī (Dussehra) 2025 falls on Thursday 2 October. Daśamī runs from 08:32 on Wed 1 Oct to 08:41 on Thu 2 Oct and is with Śravaṇa in the day time that day, for 112 minutes.

ahargana.org/chicago/festivals/2025/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 2 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 2 Oct
compat-drikpanchangComparison profileThu 2 Oct
No institution has a recorded ruling for Chicago.

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 2ndCoveredSunrise 3rdCoveredRuled
Los Angeles20:43 → 06:4106:490 min06:500 min1 Oct
Chicago22:43 → 08:4106:49112 min06:500 min2 Oct
Jersey City23:43 → 09:4106:54167 min06:550 min2 Oct
Port of Spain23:43 → 09:4105:55226 min05:550 min2 Oct
London04:43 → 14:4107:03458 min07:050 min2 Oct
Durban05:43 → 15:4105:33598 min05:320 min2 Oct
Dubai07:43 → 17:4106:12598 min06:120 min2 Oct
Delhi09:13 → 19:1106:15532 min06:150 min2 Oct
Kolkata09:13 → 19:1105:29489 min05:290 min2 Oct
Singapore11:43 → 21:4106:51433 min06:510 min2 Oct
Sydney13:43 → 23:4105:31255 min05:300 min2 Oct
Suva15:43 → 01:4105:48140 min05:470 min2 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