Ruling · Vasantotsava · 2048

Saturday 29 February

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 Saturday 29 February

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

06:57 sunrise
Pratipadā begins 07:38:12
05:4506:0906:3306:5707:2107:4508:09

Absent at sunrise

Sunrise of Sunday 1 March

Pratipadā does not hold at sunrise. Not taken.

06:56 sunrise
Pratipadā ends 06:01:19
05:4406:0806:3206:5607:2007:4408:08

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 07:38 on Sat 29 Feb to 06:01 on Sun 1 Mar.

    2048-02-29T14:38:13Z → 2048-03-01T13:01:19Z

  2. 02

    Kāla

    Sunrise is at 06:57 on the 29th and 06:56 on the 1st.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 29th and is not on the 1st.

    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 2471 s

  5. 05

    Ruling

    Vasantotsava, Phoenix, 2048: Saturday 29 February.

    confidence: boundary (absent-unstated)

Say it like this

In Phoenix, Vasantotsava 2048 falls on Saturday 29 February. Pratipadā runs from 07:38 on Sat 29 Feb to 06:01 on Sun 1 Mar, and is current at sunrise on neither day.

ahargana.org/phoenix/festivals/2048/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 29 Feb
Ahargaṇa, classicalDisc centre, no refractionSat 29 Feb
compat-drikpanchangComparison profileSat 29 Feb
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 29thCoveredSunrise 1stCoveredRuled
Los Angeles06:38 → 05:0106:22no06:21no29 Feb
Chicago08:38 → 07:0106:26no06:25holds1 Mar
Jersey City09:38 → 08:0106:31no06:29holds1 Mar
Port of Spain10:38 → 09:0106:21no06:21holds1 Mar
London14:38 → 13:0106:47no06:45holds1 Mar
Durban16:38 → 15:0105:47no05:48holds1 Mar
Dubai18:38 → 17:0106:42no06:41holds1 Mar
Delhi20:08 → 18:3106:47no06:46holds1 Mar
Kolkata20:08 → 18:3105:59no05:58holds1 Mar
Singapore22:38 → 21:0107:15no07:14holds1 Mar
Sydney01:38 → 00:0106:43no06:43holds1 Mar
Suva02:38 → 01:0106:05no06:05holds1 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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