Ruling · Vasantotsava · 2091

Monday 5 March

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

Decide it for

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two sunrises

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

Sunrise of Monday 5 March

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

06:52 sunrise
05:4006:0406:2806:5207:1607:4008:04

Absent at sunrise

Sunrise of Tuesday 6 March

Pratipadā does not hold at sunrise. Not taken.

06:50 sunrise
05:3806:0206:2606:5007:1407:3808:02

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 09:01 on Mon 5 Mar to 05:29 on Tue 6 Mar.

    2091-03-05T16:00:32Z → 2091-03-06T12:28:52Z

  2. 02

    Kāla

    Sunrise is at 06:52 on the 5th and 06:50 on the 6th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 5th and is not on the 6th.

    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 4886 s

  5. 05

    Ruling

    Vasantotsava, Phoenix, 2091: Monday 5 March.

    confidence: boundary (absent-unstated)

Say it like this

In Phoenix, Vasantotsava 2091 falls on Monday 5 March. Pratipadā runs from 09:01 on Mon 5 Mar to 05:29 on Tue 6 Mar, and is current at sunrise on neither day.

ahargana.org/phoenix/festivals/2091/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 5 Mar
Ahargaṇa, classicalDisc centre, no refractionMon 5 Mar
compat-drikpanchangComparison profileMon 5 Mar
No institution has a recorded ruling for Phoenix.

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 5thCoveredSunrise 6thCoveredRuled
Los Angeles08:01 → 04:2906:17no06:15no5 Mar
Chicago10:01 → 06:2906:19no06:17holds6 Mar
Jersey City11:01 → 07:2906:24no06:22holds6 Mar
Port of Spain12:01 → 08:2906:19no06:18holds6 Mar
London16:01 → 12:2906:37no06:35holds6 Mar
Durban18:01 → 14:2905:50no05:51holds6 Mar
Dubai20:01 → 16:2906:38no06:37holds6 Mar
Delhi21:31 → 17:5906:42no06:41holds6 Mar
Kolkata21:31 → 17:5905:55no05:54holds6 Mar
Singapore00:01 → 20:2907:14no07:14holds6 Mar
Sydney03:01 → 23:2906:47no06:48holds6 Mar
Suva04:01 → 00:2906:07no06:07holds6 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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