Ruling · Vasantotsava · 1978

Saturday 25 March

Determinatein Cairo, under the Rashtriya Panchang method. Clear of every threshold by 694 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 Saturday 25 March

Taken. The only sunrise Pratipadā holds at.

05:54 sunrise
04:4205:0605:3005:5406:1806:4207:06

Holds at sunrise

Sunrise of Sunday 26 March

Pratipadā does not hold at sunrise. Not taken.

05:53 sunrise
04:4105:0505:2905:5306:1706:4107:05

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 18:20 on Fri 24 Mar to 17:31 on Sat 25 Mar.

    1978-03-24T16:19:59Z → 1978-03-25T15:30:32Z

  2. 02

    Kāla

    Sunrise is at 05:54 on the 25th and 05:53 on the 26th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 25th and is not on the 26th.

    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 41626 s

  5. 05

    Ruling

    Vasantotsava, Cairo, 1978: Saturday 25 March.

    confidence: determinate

Say it like this

In Cairo, Vasantotsava 1978 falls on Saturday 25 March. Pratipadā runs from 18:20 on Fri 24 Mar to 17:31 on Sat 25 Mar and is current at sunrise that day.

ahargana.org/cairo/festivals/1978/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 25 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 25 Mar
compat-drikpanchangComparison profileSat 25 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 24thCoveredSunrise 25thCoveredRuled
Los Angeles08:20 → 07:3105:52no05:50holds25 Mar
Chicago10:20 → 09:3105:48no05:46holds25 Mar
Jersey City11:20 → 10:3105:54no05:52holds25 Mar
Port of Spain12:20 → 11:3106:08no06:08holds25 Mar
London17:20 → 16:3106:55no06:53holds25 Mar
Durban18:20 → 17:3106:02no06:02holds25 Mar
Dubai20:20 → 19:3106:20no06:18holds25 Mar
Delhi21:50 → 21:0106:21no06:20holds25 Mar
Kolkata21:50 → 21:0105:38no05:37holds25 Mar
Singapore23:50 → 23:0106:38no06:38holds25 Mar
Sydney02:20 → 01:3106:01no06:02holds25 Mar
Suva04:20 → 03:3106:11no06:11holds25 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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