Ruling · Vasantotsava · 1933

Sunday 12 March

Determinatein Riyadh, under the Rashtriya Panchang method. Clear of every threshold by 21 minutes.

Decide it for

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two sunrises

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

Sunrise of Sunday 12 March

Taken. The only sunrise Pratipadā holds at.

06:12 sunrise
Pratipadā begins 05:52:28
05:0005:2405:4806:1206:3607:0007:24

Holds at sunrise

Sunrise of Monday 13 March

Pratipadā does not hold at sunrise. Not taken.

06:11 sunrise
04:5905:2305:4706:1106:3506:5907:23

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 05:52 on Sun 12 Mar to 03:58 on Mon 13 Mar.

    1933-03-12T02:45:36Z → 1933-03-13T00:51:44Z

  2. 02

    Kāla

    Sunrise is at 06:12 on the 12th and 06:11 on the 13th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 12th and is not on the 13th.

    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 1236 s

  5. 05

    Ruling

    Vasantotsava, Riyadh, 1933: Sunday 12 March.

    confidence: determinate

Say it like this

In Riyadh, Vasantotsava 1933 falls on Sunday 12 March. Pratipadā runs from 05:52 on Sun 12 Mar to 03:58 on Mon 13 Mar and is current at sunrise that day.

ahargana.org/riyadh/festivals/1933/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 12 Mar
compat-drikpanchangComparison profileSun 12 Mar
No institution has a recorded ruling for Riyadh.

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 12thCoveredSunrise 13thCoveredRuled
Los Angeles18:46 → 16:5206:08holds06:07no12 Mar
Chicago20:46 → 18:5206:08holds06:07no12 Mar
Jersey City21:46 → 19:5206:14holds06:12no12 Mar
Port of Spain22:46 → 20:5206:15holds06:15no12 Mar
London02:46 → 00:5206:23holds06:21no12 Mar
Durban04:46 → 02:5205:54holds05:55no12 Mar
Dubai06:46 → 04:5206:32no06:31no12 Mar
Delhi08:16 → 06:2206:35no06:34no12 Mar
Kolkata08:16 → 06:2205:49no05:48holds13 Mar
Singapore10:06 → 08:1206:32no06:32holds13 Mar
Sydney12:46 → 10:5205:52no05:53holds13 Mar
Suva14:46 → 12:5206:08no06:09holds13 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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