Ruling · Vasantotsava · 1977

Sunday 6 March

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 585 minutes.

Decide it for

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two sunrises

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

Sunrise of Sunday 6 March

Taken. The only sunrise Pratipadā holds at.

06:28 sunrise
05:1605:4006:0406:2806:5207:1607:40

Holds at sunrise

Sunrise of Monday 7 March

Pratipadā does not hold at sunrise. Not taken.

06:27 sunrise
05:1505:3906:0306:2706:5107:1507:39

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 20:43 on Sat 5 Mar to 18:36 on Sun 6 Mar.

    1977-03-05T17:13:12Z → 1977-03-06T15:05:44Z

  2. 02

    Kāla

    Sunrise is at 06:28 on the 6th and 06:27 on the 7th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 6th and is not on the 7th.

    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 35112 s

  5. 05

    Ruling

    Vasantotsava, Tehran, 1977: Sunday 6 March.

    confidence: determinate

Say it like this

In Tehran, Vasantotsava 1977 falls on Sunday 6 March. Pratipadā runs from 20:43 on Sat 5 Mar to 18:36 on Sun 6 Mar and is current at sunrise that day.

ahargana.org/tehran/festivals/1977/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 6 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 6 Mar
compat-drikpanchangComparison profileSun 6 Mar
No institution has a recorded ruling for Tehran.

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 5thCoveredSunrise 6thCoveredRuled
Los Angeles09:13 → 07:0606:17no06:16holds6 Mar
Chicago11:13 → 09:0606:19no06:18holds6 Mar
Jersey City12:13 → 10:0606:24no06:23holds6 Mar
Port of Spain13:13 → 11:0606:19no06:18holds6 Mar
London17:13 → 15:0606:38no06:36holds6 Mar
Durban19:13 → 17:0605:50no05:50holds6 Mar
Dubai21:13 → 19:0606:38no06:37holds6 Mar
Delhi22:43 → 20:3606:43no06:42holds6 Mar
Kolkata22:43 → 20:3605:55no05:54holds6 Mar
Singapore00:43 → 22:3606:44no06:43holds6 Mar
Sydney03:13 → 01:0606:46no05:47holds6 Mar
Suva05:13 → 03:0606:06no06:07holds6 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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