Ruling · Vasantotsava · 1937

Saturday 27 March

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 588 minutes.

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 Friday 26 March

Pratipadā does not hold at sunrise. Not taken.

06:25 sunrise
05:1305:3706:0106:2506:4907:1307:37

Absent at sunrise

Sunrise of Saturday 27 March

Taken. The only sunrise Pratipadā holds at.

06:23 sunrise
05:1105:3505:5906:2306:4707:1107:35

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 16:12 on Fri 26 Mar to 17:50 on Sat 27 Mar.

    1937-03-26T23:12:11Z → 1937-03-28T00:50:12Z

  2. 02

    Kāla

    Sunrise is at 06:25 on the 26th and 06:23 on the 27th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 26th and is on the 27th.

    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 35254 s

  5. 05

    Ruling

    Vasantotsava, Phoenix, 1937: Saturday 27 March.

    confidence: determinate

Say it like this

In Phoenix, Vasantotsava 1937 falls on Saturday 27 March. Pratipadā runs from 16:12 on Fri 26 Mar to 17:50 on Sat 27 Mar and is current at sunrise that day.

ahargana.org/phoenix/festivals/1937/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 27 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 27 Mar
compat-drikpanchangComparison profileSat 27 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 26thCoveredSunrise 28thCoveredRuled
Los Angeles15:12 → 16:5005:49no05:46no27 Mar
Chicago17:12 → 18:5005:45no05:41no27 Mar
Jersey City18:12 → 19:5005:51no05:47no27 Mar
Port of Spain19:12 → 20:5006:07no06:06no27 Mar
London23:12 → 00:5005:51no05:46no27 Mar
Durban01:12 → 02:5006:03no06:04no27 Mar
Dubai03:12 → 04:5006:18no06:15no27 Mar
Delhi04:42 → 06:2006:19no06:17holds27 Mar
Kolkata04:42 → 06:2005:36no05:34holds27 Mar
Singapore06:32 → 08:1006:27no06:27holds28 Mar
Sydney09:12 → 10:5006:03no06:04holds28 Mar
Suva11:12 → 12:5006:12no06:12holds28 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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