Ruling · Vasantotsava · 1945

Wednesday 28 February

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 102 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 Tuesday 27 February

Pratipadā does not hold at sunrise. Not taken.

07:25 sunrise
06:1306:3707:0107:2507:4908:1308:37

Absent at sunrise

Sunrise of Wednesday 28 February

Taken. The only sunrise Pratipadā holds at.

07:23 sunrise
06:1106:3506:5907:2307:4708:1108:35

Holds 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 09:07 on Tue 27 Feb to 11:10 on Wed 28 Feb.

    1945-02-27T00:06:44Z → 1945-02-28T02:10:16Z

  2. 02

    Kāla

    Sunrise is at 07:25 on the 27th and 07:23 on the 28th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 27th and is on the 28th.

    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 6103 s

  5. 05

    Ruling

    Vasantotsava, Daqing, 1945: Wednesday 28 February.

    confidence: determinate

Say it like this

In Daqing, Vasantotsava 1945 falls on Wednesday 28 February. Pratipadā runs from 09:07 on Tue 27 Feb to 11:10 on Wed 28 Feb and is current at sunrise that day.

ahargana.org/daqing/festivals/1945/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 28 Feb
Ahargaṇa, classicalDisc centre, no refractionWed 28 Feb
compat-drikpanchangComparison profileWed 28 Feb
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 27thCoveredSunrise 28thCoveredRuled
Los Angeles17:07 → 19:1007:25holds07:23no27 Feb
Chicago19:07 → 21:1007:29holds07:28no27 Feb
Jersey City20:07 → 22:1007:34holds07:33no27 Feb
Port of Spain21:07 → 23:1007:22holds07:22no27 Feb
London01:07 → 03:1007:51holds07:49no27 Feb
Durban02:07 → 04:1005:45holds05:46no27 Feb
Dubai04:07 → 06:1006:44holds06:43no27 Feb
Delhi06:37 → 08:4007:49holds07:48holds27 Feb
Kolkata06:37 → 08:4007:00holds07:00holds27 Feb
Singapore09:07 → 11:1008:15no08:15holds28 Feb
Sydney10:07 → 12:1005:41no05:42holds28 Feb
Suva12:07 → 14:1006:05no06:05holds28 Feb
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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