Ruling · Vijayā Daśamī (Daśaharā) · 2021

Thursday 14 October

Boundaryin Riyadh, under the Rashtriya Panchang method. Both days qualify and the rule does not say which to take. Say “contested”.

Decide it for

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two days

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

Day of Thursday 14 October

Taken. Both days qualify; the rule is silent, and this one is covered longer.

05:51 sunrisesunset 17:27
Daśamī begins 16:22:51
05:2707:2709:2711:2713:2715:2717:2719:27

64 of 696 minutes covered, the last 64

Day of Friday 15 October

Qualifies with 55 of 695 minutes. Not taken.

05:51 sunrisesunset 17:26
Śravaṇa ends 06:46:01
05:2707:2709:2711:2713:2715:2717:2719:27

55 of 695 minutes covered, the first 55

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 16:23 on Thu 14 Oct to 15:33 on Fri 15 Oct, and Śravaṇa from 07:05 on Thu 14 Oct to 06:46 on Fri 15 Oct. They are together from 16:23 on Thu 14 Oct to 06:46 on Fri 15 Oct.

    2021-10-14T13:22:51Z → 2021-10-15T03:46:02Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 05:51–17:27 on the 14th, 05:51–17:26 on the 15th.

    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 64 of 696 minutes on the 14th and 55 of 695 on the 15th.

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

  4. 04

    Tie-break

    Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 3283 s

  5. 05

    Ruling

    Vijayā Daśamī, Riyadh, 2021: Thursday 14 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Riyadh, Vijayā Daśamī (Dussehra) 2021 falls on Thursday 14 October. Daśamī runs from 16:23 on Thu 14 Oct to 15:33 on Fri 15 Oct and is with Śravaṇa in the day time that day, for 64 minutes. They are together in the day time on the next day too, for 55 minutes; the rule does not say which to take, and the day they share longer is ruled: treat the date as contested.

ahargana.org/riyadh/festivals/2021/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 14 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 14 Oct
compat-drikpanchangComparison profileThu 14 Oct
No institution has a recorded ruling for Riyadh.

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 14thCoveredSunrise 15thCoveredRuled
Los Angeles06:23 → 20:4606:58681 min06:590 min14 Oct
Chicago08:23 → 22:4607:02587 min07:040 min14 Oct
Jersey City09:23 → 23:4607:07534 min07:080 min14 Oct
Port of Spain09:23 → 23:4605:55506 min05:550 min14 Oct
London14:23 → 04:4607:23226 min07:250 min14 Oct
Durban15:23 → 05:4605:19162 min05:1828 min14 Oct
Dubai17:23 → 07:4606:1730 min06:1789 min15 Oct
Delhi18:53 → 09:1606:210 min06:22174 min15 Oct
Kolkata18:53 → 09:1605:330 min05:33223 min15 Oct
Singapore21:23 → 11:4606:480 min06:48298 min15 Oct
Sydney00:23 → 14:4606:160 min06:14512 min15 Oct
Suva01:23 → 15:4605:380 min05:38608 min15 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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