Ruling · Vijayā Daśamī (Dussehra) · 1902

Sunday 12 October

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

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two days

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

Day of Saturday 11 October

Qualifies with 43 of 673 minutes. Not taken.

05:50 sunrisesunset 17:03
Daśamī begins 16:19:41
05:2607:2609:2611:2613:2615:2617:26

43 of 673 minutes covered, the last 43

Day of Sunday 12 October

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

05:52 sunrisesunset 17:01
Śravaṇa ends 13:13:31
05:2807:2809:2811:2813:2815:2817:28

442 of 669 minutes covered, the first 442

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 16:20 on Sat 11 Oct to 17:38 on Sun 12 Oct, and Śravaṇa from 11:15 on Sat 11 Oct to 13:14 on Sun 12 Oct. They are together from 16:20 on Sat 11 Oct to 13:14 on Sun 12 Oct.

    1902-10-11T08:19:41Z → 1902-10-12T05:13:31Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 05:50–17:03 on the 11th, 05:52–17:01 on the 12th.

    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 43 of 673 minutes on the 11th and 442 of 669 on the 12th.

    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 2599 s

  5. 05

    Ruling

    Vijayā Daśamī, Daqing, 1902: Sunday 12 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Vijayā Daśamī (Dussehra) 1902 falls on Sunday 12 October. Daśamī runs from 16:20 on Sat 11 Oct to 17:38 on Sun 12 Oct and is with Śravaṇa in the day time that day, for 442 minutes. They are together in the day time on the previous day too, for 43 minutes; the rule does not say which to take, and the day they share longer is ruled: treat the date as contested.

ahargana.org/daqing/festivals/1902/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 12 Oct
compat-drikpanchangComparison profileSun 12 Oct
No institution has a recorded ruling for Daqing.

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 11thCoveredSunrise 12thCoveredRuled
Los Angeles00:20 → 21:1405:55690 min05:550 min11 Oct
Chicago02:20 → 23:1405:58679 min05:590 min11 Oct
Jersey City03:20 → 00:1406:03681 min06:040 min11 Oct
Port of Spain04:20 → 01:1405:55716 min05:550 min11 Oct
London08:20 → 05:1406:16538 min06:180 min11 Oct
Durban09:50 → 06:4404:54463 min04:53111 min11 Oct
Dubai12:01 → 08:5505:56337 min05:56178 min11 Oct
Delhi13:41 → 10:3506:10247 min06:11264 min12 Oct
Kolkata13:41 → 10:3505:22206 min05:23312 min12 Oct
Singapore15:15 → 12:0905:44154 min05:44385 min12 Oct
Sydney18:20 → 15:1405:210 min05:20594 min12 Oct
Suva20:15 → 17:0905:370 min05:36693 min12 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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