Ruling · Vasantotsava · 1951

Saturday 24 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 648 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 Saturday 24 March

Taken. The only sunrise Pratipadā holds at.

05:38 sunrise
04:2604:5005:1405:3806:0206:2606:50

Holds at sunrise

Sunrise of Sunday 25 March

Pratipadā does not hold at sunrise. Not taken.

05:36 sunrise
04:2404:4805:1205:3606:0006:2406:48

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 18:50 on Fri 23 Mar to 17:04 on Sat 24 Mar.

    1951-03-23T10:49:47Z → 1951-03-24T09:03:50Z

  2. 02

    Kāla

    Sunrise is at 05:38 on the 24th and 05:36 on the 25th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 24th and is not on the 25th.

    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 38897 s

  5. 05

    Ruling

    Vasantotsava, Daqing, 1951: Saturday 24 March.

    confidence: determinate

Say it like this

In Daqing, Vasantotsava 1951 falls on Saturday 24 March. Pratipadā runs from 18:50 on Fri 23 Mar to 17:04 on Sat 24 Mar and is current at sunrise that day.

ahargana.org/daqing/festivals/1951/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 24 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 24 Mar
compat-drikpanchangComparison profileSat 24 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 23rdCoveredSunrise 24thCoveredRuled
Los Angeles02:50 → 01:0405:54holds05:52no23 Mar
Chicago04:50 → 03:0405:50holds05:49no23 Mar
Jersey City05:50 → 04:0405:56holds05:55no23 Mar
Port of Spain06:50 → 05:0406:09no06:09no23 Mar
London10:50 → 09:0405:59no05:57holds24 Mar
Durban12:50 → 11:0406:01no06:01holds24 Mar
Dubai14:50 → 13:0406:21no06:20holds24 Mar
Delhi16:20 → 14:3406:23no06:22holds24 Mar
Kolkata16:20 → 14:3405:39no05:38holds24 Mar
Singapore18:20 → 16:3406:38no06:38holds24 Mar
Sydney20:50 → 19:0406:00no06:01holds24 Mar
Suva22:50 → 21:0406:11no06:11holds24 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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