Ruling · Vasantotsava · 1991

Friday 1 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 237 minutes.

Decide it for

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

The two sunrises

One ghaṭī is 24 minutes. The sunrise is read as upper limb, 31′ + 16′.

Sunrise of Friday 1 March

Taken. The only sunrise Pratipadā holds at.

06:22 sunrise
05:1005:3405:5806:2206:4607:1007:34

Holds at sunrise

Sunrise of Saturday 2 March

Pratipadā does not hold at sunrise. Not taken.

06:20 sunrise
05:0805:3205:5606:2006:4407:0807:32

Absent at sunrise

Pratipadā presentSunrise, the instant the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 02:25 on Fri 1 Mar to 00:57 on Sat 2 Mar.

    1991-02-28T18:24:34Z → 1991-03-01T16:57:20Z

  2. 02

    Kāla

    Sunrise is at 06:22 on the 1st and 06:20 on the 2nd.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 1st and is not on the 2nd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

  4. 04

    Tie-break

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

    priority: purvaviddha → only-day · margin 14221 s

  5. 05

    Ruling

    Vasantotsava, Daqing, 1991: Friday 1 March.

    confidence: determinate

Say it like this

In Daqing, Vasantotsava 1991 falls on Friday 1 March. Pratipadā runs from 02:25 on Fri 1 Mar to 00:57 on Sat 2 Mar and is current at sunrise that day.

ahargana.org/daqing/festivals/1991/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 1 Mar
Ahargaṇa, classicalDisc centre, no refractionFri 1 Mar
compat-drikpanchangComparison profileFri 1 Mar
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/vasantotsava · ruleset 2026.3-draft

Month
Phālguna, amānta
Pakṣa · aṅga
Kṛṣṇa · Pratipadā
Kāla
Sunrise
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 105

“K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāSunrise 28thCoveredSunrise 1stCoveredRuled
Los Angeles10:25 → 08:5706:24no06:22holds1 Mar
Chicago12:25 → 10:5706:28no06:26holds1 Mar
Jersey City13:25 → 11:5706:33no06:31holds1 Mar
Port of Spain14:25 → 12:5706:22no06:21holds1 Mar
London18:25 → 16:5706:49no06:47holds1 Mar
Durban20:25 → 18:5705:46no05:47holds1 Mar
Dubai22:25 → 20:5706:43no06:43holds1 Mar
Delhi23:55 → 22:2706:48no06:47holds1 Mar
Kolkata23:55 → 22:2706:00no05:59holds1 Mar
Singapore02:25 → 00:5707:15no07:15holds1 Mar
Sydney05:25 → 03:5706:42no06:42holds1 Mar
Suva06:25 → 04:5706:05no06:05no1 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
vasantotsava@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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