Ruling · Vasantotsava · 1949

Tuesday 15 March

Determinatein Cairo, under the Rashtriya Panchang method. Clear of every threshold by 543 minutes.

Decide it for

30°04′ N 31°15′ E · Africa/Cairo · GeoNames 360630

The two sunrises

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

Sunrise of Tuesday 15 March

Taken. The only sunrise Pratipadā holds at.

06:06 sunrise
04:5405:1805:4206:0606:3006:5407:18

Holds at sunrise

Sunrise of Wednesday 16 March

Pratipadā does not hold at sunrise. Not taken.

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

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 21:03 on Mon 14 Mar to 17:14 on Tue 15 Mar.

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

  2. 02

    Kāla

    Sunrise is at 06:06 on the 15th and 06:05 on the 16th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 15th and is not on the 16th.

    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 32582 s

  5. 05

    Ruling

    Vasantotsava, Cairo, 1949: Tuesday 15 March.

    confidence: determinate

Say it like this

In Cairo, Vasantotsava 1949 falls on Tuesday 15 March. Pratipadā runs from 21:03 on Mon 14 Mar to 17:14 on Tue 15 Mar and is current at sunrise that day.

ahargana.org/cairo/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 Cairo.

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

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