Ruling · Vasantotsava · 2006

Thursday 16 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 101 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 15 March

Pratipadā does not hold at sunrise. Not taken.

05:54 sunrise
04:4205:0605:3005:5406:1806:4207:06

Absent at sunrise

Sunrise of Thursday 16 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 07:35 on Wed 15 Mar to 09:58 on Thu 16 Mar.

    2006-03-14T23:35:26Z → 2006-03-16T01:58:07Z

  2. 02

    Kāla

    Sunrise is at 05:54 on the 15th and 05:52 on the 16th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 15th and is on the 16th.

    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 6065 s

  5. 05

    Ruling

    Vasantotsava, Daqing, 2006: Thursday 16 March.

    confidence: determinate

Say it like this

In Daqing, Vasantotsava 2006 falls on Thursday 16 March. Pratipadā runs from 07:35 on Wed 15 Mar to 09:58 on Thu 16 Mar and is current at sunrise that day.

ahargana.org/daqing/festivals/2006/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 16 Mar
Ahargaṇa, classicalDisc centre, no refractionThu 16 Mar
compat-drikpanchangComparison profileThu 16 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 14thCoveredSunrise 16thCoveredRuled
Los Angeles15:35 → 17:5806:05no06:02no15 Mar
Chicago17:35 → 19:5806:05no06:01no15 Mar
Jersey City18:35 → 20:5806:10no06:07no15 Mar
Port of Spain19:35 → 21:5806:14no06:13no15 Mar
London23:35 → 01:5806:18no06:13no15 Mar
Durban01:35 → 03:5805:56no05:57no15 Mar
Dubai03:35 → 05:5806:30no06:28no15 Mar
Delhi05:05 → 07:2806:33no06:30holds15 Mar
Kolkata05:05 → 07:2805:47no05:45holds15 Mar
Singapore07:35 → 09:5807:11no07:10holds16 Mar
Sydney10:35 → 12:5806:53no06:55holds16 Mar
Suva11:35 → 13:5806:09no06:09holds16 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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