Ruling · Vasantotsava · 1915

Tuesday 2 March

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 513 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 Tuesday 2 March

Taken. The only sunrise Pratipadā holds at.

06:30 sunrise
05:1805:4206:0606:3006:5407:1807:42

Holds at sunrise

Sunrise of Wednesday 3 March

Pratipadā does not hold at sunrise. Not taken.

06:29 sunrise
05:1705:4106:0506:2906:5307:1707:41

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 21:57 on Mon 1 Mar to 19:56 on Tue 2 Mar.

    1915-03-01T18:32:21Z → 1915-03-02T16:30:54Z

  2. 02

    Kāla

    Sunrise is at 06:30 on the 2nd and 06:29 on the 3rd.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is on the 2nd and is not on the 3rd.

    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 30766 s

  5. 05

    Ruling

    Vasantotsava, Tehran, 1915: Tuesday 2 March.

    confidence: determinate

Say it like this

In Tehran, Vasantotsava 1915 falls on Tuesday 2 March. Pratipadā runs from 21:57 on Mon 1 Mar to 19:56 on Tue 2 Mar and is current at sunrise that day.

ahargana.org/tehran/festivals/1915/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 2 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 2 Mar
compat-drikpanchangComparison profileTue 2 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 1stCoveredSunrise 2ndCoveredRuled
Los Angeles10:32 → 08:3106:23no06:22holds2 Mar
Chicago12:32 → 10:3106:27no06:26holds2 Mar
Jersey City13:32 → 11:3106:32no06:31holds2 Mar
Port of Spain14:32 → 12:3106:22no06:21holds2 Mar
London18:32 → 16:3106:49no06:46holds2 Mar
Durban20:32 → 18:3105:46no05:47holds2 Mar
Dubai22:13 → 20:1206:24no06:23holds2 Mar
Delhi00:02 → 22:0106:48no06:47holds2 Mar
Kolkata00:02 → 22:0105:59no05:59holds2 Mar
Singapore01:32 → 23:3106:15no06:15holds2 Mar
Sydney04:32 → 02:3105:42no05:43holds2 Mar
Suva06:27 → 04:2606:00no06:00no2 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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