Ruling · Vasantotsava · 2004

Sunday 7 March

Boundaryin Shaoxing, under the Rashtriya Panchang method. Pratipadā reaches sunrise on neither day and the rule does not say what then. Say “contested”.

Decide it for

30°00′ N 120°35′ E · Asia/Shanghai · GeoNames 1795855

The two sunrises

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

Sunrise of Sunday 7 March

Taken. Pratipadā reaches neither sunrise; this is the day it falls on.

06:17 sunrise
Pratipadā begins 07:14:16
05:0505:2905:5306:1706:4107:0507:29

Absent at sunrise

Sunrise of Monday 8 March

Pratipadā does not hold at sunrise. Not taken.

06:16 sunrise
Pratipadā ends 05:56:02
05:0405:2805:5206:1606:4007:0407:28

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 07:14 on Sun 7 Mar to 05:56 on Mon 8 Mar.

    2004-03-06T23:14:16Z → 2004-03-07T21:56:02Z

  2. 02

    Kāla

    Sunrise is at 06:17 on the 7th and 06:16 on the 8th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 7th and is not on the 8th.

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

  4. 04

    Tie-break

    Neither sunrise qualifies. The day the tithi falls on is taken.

    priority: purvaviddha → tithi-day · margin 1209 s

  5. 05

    Ruling

    Vasantotsava, Shaoxing, 2004: Sunday 7 March.

    confidence: boundary (absent-unstated)

Say it like this

In Shaoxing, Vasantotsava 2004 falls on Sunday 7 March. Pratipadā runs from 07:14 on Sun 7 Mar to 05:56 on Mon 8 Mar, and is current at sunrise on neither day.

ahargana.org/shaoxing/festivals/2004/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 7 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 7 Mar
compat-drikpanchangComparison profileSun 7 Mar
No institution has a recorded ruling for Shaoxing.

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 6thCoveredSunrise 7thCoveredRuled
Los Angeles15:14 → 13:5606:15no06:14holds7 Mar
Chicago17:14 → 15:5606:17no06:15holds7 Mar
Jersey City18:14 → 16:5606:22no06:21holds7 Mar
Port of Spain19:14 → 17:5606:18no06:18holds7 Mar
London23:14 → 21:5606:35no06:32holds7 Mar
Durban01:14 → 23:5605:51no05:51holds7 Mar
Dubai03:14 → 01:5606:37no06:36holds7 Mar
Delhi04:44 → 03:2606:41no06:40holds7 Mar
Kolkata04:44 → 03:2605:54no05:53holds7 Mar
Singapore07:14 → 05:5607:13no07:13no7 Mar
Sydney10:14 → 08:5606:47no06:48no8 Mar
Suva11:14 → 09:5606:07no06:07no8 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

About Ahargaṇa