Ruling · Vijayā Daśamī (Daśaharā) · 2027

Saturday 9 October

Determinatein Chicago, under the Rashtriya Panchang method. Clear of every threshold by 328 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 Friday 8 October

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

06:55 sunrisesunset 18:20
06:3108:3110:3112:3114:3116:3118:31

0 of 685 minutes covered

Day of Saturday 9 October

Taken. The only day Daśamī with Śravaṇa reaches.

06:56 sunrisesunset 18:19
06:3208:3210:3212:3214:3216:3218:32

682 of 682 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 22:32 on Fri 8 Oct to 01:11 on Sun 10 Oct, and Śravaṇa from 23:48 on Fri 8 Oct to 02:56 on Sun 10 Oct. They are together from 23:48 on Fri 8 Oct to 01:11 on Sun 10 Oct.

    2027-10-09T04:48:18Z → 2027-10-10T06:11:09Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 06:55–18:20 on the 8th, 06:56–18:19 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 685 minutes on the 8th and 682 of 682 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 19674 s

  5. 05

    Ruling

    Vijayā Daśamī, Chicago, 2027: Saturday 9 October.

    confidence: determinate

Say it like this

In Chicago, Vijayā Daśamī (Dussehra) 2027 falls on Saturday 9 October. Daśamī runs from 22:32 on Fri 8 Oct to 01:11 on Sun 10 Oct and is with Śravaṇa in the day time that day, for 682 minutes.

ahargana.org/chicago/festivals/2027/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 9 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 9 Oct
compat-drikpanchangComparison profileSat 9 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 9thCoveredSunrise 10thCoveredRuled
Los Angeles21:48 → 23:1106:54693 min06:540 min9 Oct
Chicago23:48 → 01:1106:56682 min06:570 min9 Oct
Jersey City00:48 → 02:1107:01684 min07:020 min9 Oct
Port of Spain00:48 → 02:1105:55717 min05:550 min9 Oct
London05:48 → 07:1107:14666 min07:160 min9 Oct
Durban06:48 → 08:1105:25673 min05:24167 min9 Oct
Dubai08:48 → 10:1106:14549 min06:15236 min9 Oct
Delhi10:18 → 11:4106:18460 min06:19322 min9 Oct
Kolkata10:18 → 11:4105:31419 min05:31370 min9 Oct
Singapore12:48 → 14:1106:49366 min06:49442 min10 Oct
Sydney15:48 → 17:1106:23195 min06:21650 min10 Oct
Suva16:48 → 18:1105:4377 min05:42744 min10 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