Ruling · Vasantotsava · 2066

Friday 12 March

Determinatein Riyadh, under the Rashtriya Panchang method. Clear of every threshold by 257 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 Friday 12 March

Taken. The only sunrise Pratipadā holds at.

06:05 sunrise
04:5305:1705:4106:0506:2906:5307:17

Holds at sunrise

Sunrise of Saturday 13 March

Pratipadā does not hold at sunrise. Not taken.

06:04 sunrise
04:5205:1605:4006:0406:2806:5207:16

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 01:49 on Fri 12 Mar to 00:20 on Sat 13 Mar.

    2066-03-11T22:48:36Z → 2066-03-12T21:19:54Z

  2. 02

    Kāla

    Sunrise is at 06:05 on the 12th and 06:04 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 15410 s

  5. 05

    Ruling

    Vasantotsava, Riyadh, 2066: Friday 12 March.

    confidence: determinate

Say it like this

In Riyadh, Vasantotsava 2066 falls on Friday 12 March. Pratipadā runs from 01:49 on Fri 12 Mar to 00:20 on Sat 13 Mar and is current at sunrise that day.

ahargana.org/riyadh/festivals/2066/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Mar
Ahargaṇa, classicalDisc centre, no refractionFri 12 Mar
compat-drikpanchangComparison profileFri 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 11thCoveredSunrise 12thCoveredRuled
Los Angeles14:49 → 13:2006:08no06:07holds12 Mar
Chicago16:49 → 15:2006:09no06:07holds12 Mar
Jersey City17:49 → 16:2006:14no06:13holds12 Mar
Port of Spain18:49 → 17:2006:16no06:15holds12 Mar
London22:49 → 21:2006:24no06:21holds12 Mar
Durban00:49 → 23:2005:54no05:55holds12 Mar
Dubai02:49 → 01:2006:32no06:31holds12 Mar
Delhi04:19 → 02:5006:36no06:34holds12 Mar
Kolkata04:19 → 02:5005:49no05:48holds12 Mar
Singapore06:49 → 05:2007:12no07:12holds12 Mar
Sydney09:49 → 08:2006:52no06:52no13 Mar
Suva10:49 → 09:2006:08no06:09no13 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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