Ruling · Vasantotsava · 2089

Sunday 27 March

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 319 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 Saturday 26 March

Pratipadā does not hold at sunrise. Not taken.

05:59 sunrise
04:4705:1105:3505:5906:2306:4707:11

Absent at sunrise

Sunrise of Sunday 27 March

Taken. The only sunrise Pratipadā holds at.

05:58 sunrise
04:4605:1005:3405:5806:2206:4607:10

Holds 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 12:51 on Sat 26 Mar to 11:17 on Sun 27 Mar.

    2089-03-26T09:21:28Z → 2089-03-27T07:47:02Z

  2. 02

    Kāla

    Sunrise is at 05:59 on the 26th and 05:58 on the 27th.

    sunrise: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be current at sunrise. It is not on the 26th and is on the 27th.

    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 19155 s

  5. 05

    Ruling

    Vasantotsava, Tehran, 2089: Sunday 27 March.

    confidence: determinate

Say it like this

In Tehran, Vasantotsava 2089 falls on Sunday 27 March. Pratipadā runs from 12:51 on Sat 26 Mar to 11:17 on Sun 27 Mar and is current at sunrise that day.

ahargana.org/tehran/festivals/2089/vasantotsava · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 27 Mar
Ahargaṇa, classicalDisc centre, no refractionSun 27 Mar
compat-drikpanchangComparison profileSun 27 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 26thCoveredSunrise 27thCoveredRuled
Los Angeles02:21 → 00:4706:48holds06:46no26 Mar
Chicago04:21 → 02:4706:43holds06:41no26 Mar
Jersey City05:21 → 03:4706:49holds06:47no26 Mar
Port of Spain05:21 → 03:4706:07holds06:06no26 Mar
London09:21 → 08:4705:49no06:46holds27 Mar
Durban11:21 → 09:4706:04no06:04holds27 Mar
Dubai13:21 → 11:4706:17no06:15holds27 Mar
Delhi14:51 → 13:1706:18no06:17holds27 Mar
Kolkata14:51 → 13:1705:35no05:34holds27 Mar
Singapore17:21 → 15:4707:07no07:07holds27 Mar
Sydney20:21 → 18:4707:04no07:04holds27 Mar
Suva21:21 → 19:4706:12no06:12holds27 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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