Ruling · Vasantotsava · 1938

Thursday 17 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 386 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 Wednesday 16 March

Pratipadā does not hold at sunrise. Not taken.

05:53 sunrise
04:4105:0505:2905:5306:1706:4107:05

Absent at sunrise

Sunrise of Thursday 17 March

Taken. The only sunrise Pratipadā holds at.

05:52 sunrise
04:4005:0405:2805:5206:1606:4007:04

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 13:15 on Wed 16 Mar to 12:17 on Thu 17 Mar.

    1938-03-16T05:15:06Z → 1938-03-17T04:17:11Z

  2. 02

    Kāla

    Sunrise is at 05:53 on the 16th and 05:52 on the 17th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 16th and is on the 17th.

    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 23140 s

  5. 05

    Ruling

    Vasantotsava, Daqing, 1938: Thursday 17 March.

    confidence: determinate

Say it like this

In Daqing, Vasantotsava 1938 falls on Thursday 17 March. Pratipadā runs from 13:15 on Wed 16 Mar to 12:17 on Thu 17 Mar and is current at sunrise that day.

ahargana.org/daqing/festivals/1938/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 17 Mar
Ahargaṇa, classicalDisc centre, no refractionThu 17 Mar
compat-drikpanchangComparison profileThu 17 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 16thCoveredSunrise 17thCoveredRuled
Los Angeles21:15 → 20:1706:03holds06:02no16 Mar
Chicago23:15 → 22:1706:02holds06:00no16 Mar
Jersey City00:15 → 23:1706:08holds06:06no16 Mar
Port of Spain01:15 → 00:1706:13holds06:13no16 Mar
London05:15 → 04:1706:14holds06:12no16 Mar
Durban07:15 → 06:1705:57no05:57holds17 Mar
Dubai09:15 → 08:1706:28no06:27holds17 Mar
Delhi10:45 → 09:4706:31no06:30holds17 Mar
Kolkata10:45 → 09:4705:46no05:45holds17 Mar
Singapore12:35 → 11:3706:31no06:30holds17 Mar
Sydney15:15 → 14:1705:55no05:55holds17 Mar
Suva17:15 → 16:1706:09no06:09holds17 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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