Ruling · Vijayā Daśamī (Dussehra) · 1990

Saturday 29 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 216 minutes.

Decide it for

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Saturday 29 September

Taken. The only midday Daśamī reaches.

madhyāhna begins 11:06  11:54 madhyāhna ends
10:1810:4211:0611:3011:5412:1812:42

48 of 48 minutes covered

Midday of Sunday 30 September

Daśamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:06  11:54 madhyāhna ends
10:1810:4211:0611:3011:5412:1812:42

0 of 48 minutes covered

Daśamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Daśamī runs from 00:56 on Sat 29 Sep to 02:01 on Sun 30 Sep.

    1990-09-28T16:55:35Z → 1990-09-29T18:00:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:06–11:54 on the 29th, 11:06–11:54 on the 30th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Daśamī touches Śravaṇa in the day time on neither day, so the rest of the rule applies. Daśamī must be present during madhyāhna. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.

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

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 12947 s

  5. 05

    Ruling

    Vijayā Daśamī, Daqing, 1990: Saturday 29 September.

    confidence: determinate

Say it like this

In Daqing, Vijayā Daśamī (Dussehra) 1990 falls on Saturday 29 September. Daśamī touches Śravaṇa in the day time on neither day, so madhyāhna decides. Daśamī runs from 00:56 on Sat 29 Sep to 02:01 on Sun 30 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1990/vijaya-dashami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 29 Sep
Ahargaṇa, classicalDisc centre, no refractionSat 29 Sep
compat-drikpanchangComparison profileSat 29 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.

PlaceDaśamīMadhyāhna 28thCoveredMadhyāhna 29thCoveredRuled
Los Angeles09:56 → 11:0112:1948 min12:190 min29 Sep
Chicago11:56 → 13:0112:1748 min12:1744 min29 Sep
Jersey City12:56 → 14:0112:2315 min12:2248 min29 Sep
Port of Spain12:56 → 14:0111:330 min11:3248 min29 Sep
London17:56 → 19:0112:270 min12:2648 min29 Sep
Durban18:56 → 20:0111:230 min11:2348 min29 Sep
Dubai20:56 → 22:0111:450 min11:4548 min29 Sep
Delhi22:26 → 23:3111:480 min11:4748 min29 Sep
Kolkata22:26 → 23:3111:030 min11:0348 min29 Sep
Singapore00:56 → 02:0112:310 min12:3148 min29 Sep
Sydney02:56 → 04:0111:220 min11:2248 min29 Sep
Suva04:56 → 06:0111:330 min11:3348 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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