Ruling · Vasantotsava · 2001

Saturday 10 March

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 23 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 9 March

Pratipadā does not hold at sunrise. Not taken.

06:46 sunrise
05:3405:5806:2206:4607:1007:3407:58

Absent at sunrise

Sunrise of Saturday 10 March

Taken. The only sunrise Pratipadā holds at.

06:45 sunrise
Pratipadā ends 07:08:21
05:3305:5706:2106:4507:0907:3307:57

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 10:23 on Fri 9 Mar to 07:08 on Sat 10 Mar.

    2001-03-09T17:23:04Z → 2001-03-10T14:08:22Z

  2. 02

    Kāla

    Sunrise is at 06:46 on the 9th and 06:45 on the 10th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 9th and is on the 10th.

    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 1390 s

  5. 05

    Ruling

    Vasantotsava, Phoenix, 2001: Saturday 10 March.

    confidence: determinate

Say it like this

In Phoenix, Vasantotsava 2001 falls on Saturday 10 March. Pratipadā runs from 10:23 on Fri 9 Mar to 07:08 on Sat 10 Mar and is current at sunrise that day.

ahargana.org/phoenix/festivals/2001/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 10 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 10 Mar
compat-drikpanchangComparison profileSat 10 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 9thCoveredSunrise 10thCoveredRuled
Los Angeles09:23 → 06:0806:11no06:10no9 Mar
Chicago11:23 → 08:0806:13no06:11holds10 Mar
Jersey City12:23 → 09:0806:18no06:16holds10 Mar
Port of Spain13:23 → 10:0806:17no06:16holds10 Mar
London17:23 → 14:0806:28no06:26holds10 Mar
Durban19:23 → 16:0805:53no05:53holds10 Mar
Dubai21:23 → 18:0806:34no06:33holds10 Mar
Delhi22:53 → 19:3806:38no06:37holds10 Mar
Kolkata22:53 → 19:3805:51no05:50holds10 Mar
Singapore01:23 → 22:0807:13no07:12holds10 Mar
Sydney04:23 → 01:0806:50no06:50holds10 Mar
Suva05:23 → 02:0806:08no06:08holds10 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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