Ruling · Vasantotsava · 1949

Tuesday 15 March

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 603 minutes.

Decide it for

8°50′ S 13°14′ E · Africa/Luanda · GeoNames 2240449

The two sunrises

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

Sunrise of Monday 14 March

Pratipadā does not hold at sunrise. Not taken.

06:12 sunrise
05:0005:2405:4806:1206:3607:0007:24

Absent at sunrise

Sunrise of Tuesday 15 March

Taken. The only sunrise Pratipadā holds at.

06:12 sunrise
05:0005:2405:4806:1206:3607:0007:24

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 20:03 on Mon 14 Mar to 16:14 on Tue 15 Mar.

    1949-03-14T19:02:49Z → 1949-03-15T15:14:22Z

  2. 02

    Kāla

    Sunrise is at 06:12 on the 14th and 06:12 on the 15th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 14th and is on the 15th.

    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 36163 s

  5. 05

    Ruling

    Vasantotsava, Luanda, 1949: Tuesday 15 March.

    confidence: determinate

Say it like this

In Luanda, Vasantotsava 1949 falls on Tuesday 15 March. Pratipadā runs from 20:03 on Mon 14 Mar to 16:14 on Tue 15 Mar and is current at sunrise that day.

ahargana.org/luanda/festivals/1949/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 15 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 15 Mar
compat-drikpanchangComparison profileTue 15 Mar
No institution has a recorded ruling for Luanda.

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 14thCoveredSunrise 15thCoveredRuled
Los Angeles11:03 → 07:1406:05no06:04holds15 Mar
Chicago13:03 → 09:1406:05no06:03holds15 Mar
Jersey City14:03 → 10:1406:10no06:09holds15 Mar
Port of Spain15:03 → 11:1406:14no06:14holds15 Mar
London19:03 → 15:1406:18no06:16holds15 Mar
Durban21:03 → 17:1405:56no05:56holds15 Mar
Dubai23:03 → 19:1406:30no06:29holds15 Mar
Delhi00:33 → 20:4406:33no06:32holds15 Mar
Kolkata00:33 → 20:4405:47no05:46holds15 Mar
Singapore02:33 → 22:4406:41no06:41holds15 Mar
Sydney05:03 → 01:1405:53no05:54holds15 Mar
Suva07:03 → 03:1406:09no06:09no15 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

About Ahargaṇa