Ruling · Vijayā Daśamī (Dussehra) · 1971

Thursday 30 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 67 minutes.

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 Wednesday 29 September

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

05:35 sunrisesunset 17:26
05:1107:1109:1111:1113:1115:1117:1119:11

0 of 711 minutes covered

Day of Thursday 30 September

Taken. The only day Daśamī with Śravaṇa reaches.

05:36 sunrisesunset 17:24
Śravaṇa begins 06:43:16Daśamī ends 11:42:27
05:1207:1209:1211:1213:1215:1217:1219:12

299 of 708 minutes covered, the first 299

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 12:56 on Wed 29 Sep to 11:42 on Thu 30 Sep, and Śravaṇa from 06:43 on Thu 30 Sep to 05:37 on Fri 1 Oct. They are together from 06:43 on Thu 30 Sep to 11:42 on Thu 30 Sep.

    1971-09-29T22:43:16Z → 1971-09-30T03:42:28Z

  2. 02

    Kāla

    The day time is sunrise to sunset: 05:35–17:26 on the 29th, 05:36–17:24 on the 30th.

    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 711 minutes on the 29th and 299 of 708 on the 30th.

    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 4034 s

  5. 05

    Ruling

    Vijayā Daśamī, Daqing, 1971: Thursday 30 September.

    confidence: determinate

Say it like this

In Daqing, Vijayā Daśamī (Dussehra) 1971 falls on Thursday 30 September. Daśamī runs from 12:56 on Wed 29 Sep to 11:42 on Thu 30 Sep and is with Śravaṇa in the day time that day, for 299 minutes.

ahargana.org/daqing/festivals/1971/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 30 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 30 Sep
compat-drikpanchangComparison profileThu 30 Sep
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 29thCoveredSunrise 30thCoveredRuled
Los Angeles15:43 → 20:4206:46177 min06:470 min29 Sep
Chicago17:43 → 22:4206:4553 min06:460 min29 Sep
Jersey City18:43 → 23:4206:500 min06:510 min29 Sep
Port of Spain18:43 → 23:4205:550 min05:550 min29 Sep
London23:43 → 04:4206:570 min06:590 min29 Sep
Durban00:43 → 05:4205:380 min05:376 min30 Sep
Dubai02:43 → 07:4206:100 min06:1092 min30 Sep
Delhi04:13 → 09:1206:130 min06:13179 min30 Sep
Kolkata04:13 → 09:1205:270 min05:28225 min30 Sep
Singapore06:13 → 11:1206:220 min06:22290 min30 Sep
Sydney08:43 → 13:4205:370 min05:35299 min30 Sep
Suva10:43 → 15:4205:510 min05:50299 min30 Sep
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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