123456789101112131415161718192021222324252627282930
April 2012 · each Moon as it stands at sunriseCaitra Śukla to Vaiśākha ŚuklaThe month ›

Ruling · 2012 · Tehran

Śaṅkara Jayantī

Thursday 26 April2012 · Tehran, Iran

Determinatemargin 513 min

In Tehran, under the Rashtriya Panchang method. Clear of every threshold by 513 minutes.

Decide it forTehranDelhiKolkataSingaporeSydneyJersey City35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays मध्याह्न

One ghaṭī is 24 minutes

Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 25 April

Pañcamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:39  13:27 madhyāhna ends
11:5112:1512:3913:0313:2713:5114:15

0 of 48 minutes covered

Midday of Thursday 26 April

Taken. The only midday Pañcamī reaches.

madhyāhna begins 12:38  13:26 madhyāhna ends
11:5012:1412:3813:0213:2613:5014:14

48 of 48 minutes covered

Pañcamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided निर्णय

  1. Step 1, Aṅga

    Pañcamī runs from 22:00 on Wed 25 Apr to 00:01 on Fri 27 Apr.

    2012-04-25T17:29:55Z → 2012-04-26T19:31:27Z
  2. Step 2, Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:39–13:27 on the 25th, 12:38–13:26 on the 26th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
  3. Step 3, Rule

    Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 25th and 48 of 48 on the 26th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102
  4. Step 4, Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 30804 s
  5. Step 5, Ruling

    Śaṅkara Jayantī, Tehran, 2012: Thursday 26 April.

    confidence: determinate

Say it like this

In Tehran, Śaṅkara Jayantī 2012 falls on Thursday 26 April. Pañcamī runs from 22:00 on Wed 25 Apr to 00:01 on Fri 27 Apr and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2012/shankara-jayantipac-rp@2026.1

Who says what

never edited to agree

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 26 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 26 Apr
compat-drikpanchangComparison profileThu 26 Apr
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/shankara-jayanti · ruleset 2026.3-draft

Month
Vaiśākha, amānta
Pakṣa · aṅga
Śukla · Pañcamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

S 5 Sankara jayanti. Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

twelve places, west to east · local clocks

PlacePañcamīMadhyāhna 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles10:30 → 12:3112:2748 min12:275 min25 Apr
Chicago12:30 → 14:3112:2543 min12:2548 min26 Apr
Jersey City13:30 → 15:3112:310 min12:3048 min26 Apr
Port of Spain13:30 → 15:3111:400 min11:4048 min26 Apr
London18:30 → 20:3112:350 min12:3548 min26 Apr
Durban19:30 → 21:3111:300 min11:2948 min26 Apr
Dubai21:30 → 23:3111:530 min11:5348 min26 Apr
Delhi23:00 → 01:0111:550 min11:5548 min26 Apr
Kolkata23:00 → 01:0111:110 min11:1048 min26 Apr
Singapore01:30 → 03:3112:390 min12:3848 min26 Apr
Sydney03:30 → 05:3111:290 min11:2948 min26 Apr
Suva05:30 → 07:3111:400 min11:4048 min26 Apr
This ruling as JSON · ICS
Profile · tradition
pac-rp@2026.1 · smarta
Rule
shankara-jayanti@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s