Ruling · Vijayā Daśamī (Dussehra) · 2008

Thursday 9 October

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 80 minutes.

Decide it for

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two days

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

Day of Thursday 9 October

Taken. The only day Daśamī with Śravaṇa reaches.

06:06 sunrisesunset 17:36
05:4207:4209:4211:4213:4215:4217:4219:42

690 of 690 minutes covered

Day of Friday 10 October

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

06:07 sunrisesunset 17:35
05:4307:4309:4311:4313:4315:4317:4319:43

0 of 688 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 03:34 on Thu 9 Oct to 04:47 on Fri 10 Oct, and Śravaṇa from 03:23 on Thu 9 Oct to 05:10 on Fri 10 Oct. They are together from 03:34 on Thu 9 Oct to 04:47 on Fri 10 Oct.

    2008-10-09T00:03:36Z → 2008-10-10T01:17:07Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 06:06–17:36 on the 9th, 06:07–17:35 on the 10th.

    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 690 of 690 minutes on the 9th and 0 of 688 on the 10th.

    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 4788 s

  5. 05

    Ruling

    Vijayā Daśamī, Tehran, 2008: Thursday 9 October.

    confidence: determinate

Say it like this

In Tehran, Vijayā Daśamī (Dussehra) 2008 falls on Thursday 9 October. Daśamī runs from 03:34 on Thu 9 Oct to 04:47 on Fri 10 Oct and is with Śravaṇa in the day time that day, for 690 minutes.

ahargana.org/tehran/festivals/2008/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 Tehran.

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 Angeles17:04 → 18:1706:54683 min06:550 min9 Oct
Chicago19:04 → 20:1706:57681 min06:580 min9 Oct
Jersey City20:04 → 21:1707:02683 min07:030 min9 Oct
Port of Spain20:04 → 21:1705:55716 min05:550 min9 Oct
London01:04 → 02:1707:15664 min07:170 min9 Oct
Durban02:04 → 03:1705:25757 min05:240 min9 Oct
Dubai04:04 → 05:1706:15703 min06:150 min9 Oct
Delhi05:34 → 06:4706:19699 min06:1928 min9 Oct
Kolkata05:34 → 06:4705:31703 min05:3176 min9 Oct
Singapore08:04 → 09:1706:49651 min06:49148 min9 Oct
Sydney11:04 → 12:1706:22480 min06:21357 min9 Oct
Suva12:04 → 13:1705:42362 min05:41456 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

About Ahargaṇa