Ruling · Vasantotsava · 1942

Tuesday 3 March

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

Decide it for

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two sunrises

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

Sunrise of Tuesday 3 March

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

06:43 sunrise
Pratipadā begins 06:49:45
05:3105:5506:1906:4307:0707:3107:55

Absent at sunrise

Sunrise of Wednesday 4 March

Pratipadā does not hold at sunrise. Not taken.

06:42 sunrise
Pratipadā ends 05:43:11
05:3005:5406:1806:4207:0607:3007:54

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 06:50 on Tue 3 Mar to 05:43 on Wed 4 Mar.

    1942-03-03T00:19:46Z → 1942-03-03T23:13:11Z

  2. 02

    Kāla

    Sunrise is at 06:43 on the 3rd and 06:42 on the 4th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 3rd and is not on the 4th.

    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 387 s

  5. 05

    Ruling

    Vasantotsava, Chattogram, 1942: Tuesday 3 March.

    confidence: boundary (absent-unstated)

Say it like this

In Chattogram, Vasantotsava 1942 falls on Tuesday 3 March. Pratipadā runs from 06:50 on Tue 3 Mar to 05:43 on Wed 4 Mar, and is current at sunrise on neither day.

ahargana.org/chattogram/festivals/1942/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 3 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 3 Mar
compat-drikpanchangComparison profileTue 3 Mar
No institution has a recorded ruling for Chattogram.

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 3rdCoveredSunrise 4thCoveredRuled
Los Angeles17:20 → 16:1307:20holds07:19no3 Mar
Chicago19:20 → 18:1307:24holds07:22no3 Mar
Jersey City20:20 → 19:1307:28holds07:27no3 Mar
Port of Spain20:20 → 19:1306:20holds06:20no3 Mar
London01:20 → 00:1307:43holds07:41no3 Mar
Durban02:20 → 01:1305:48holds05:49no3 Mar
Dubai04:20 → 03:1306:41holds06:40no3 Mar
Delhi06:50 → 05:4307:45holds07:44no3 Mar
Kolkata06:50 → 05:4306:57holds06:56no3 Mar
Singapore09:20 → 08:1308:14no08:14no3 Mar
Sydney11:20 → 10:1306:44no06:45holds4 Mar
Suva12:20 → 11:1306:06no06:06holds4 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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