Ruling · Rathayātrā · 2001

Saturday 23 June

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 9 min 13 s.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

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

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Friday 22 June

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 12:42  13:30 madhyāhna ends
Dvitīyā begins 13:39:28
11:5412:1812:4213:0613:3013:5414:18

0 of 48 minutes covered

Midday of Saturday 23 June

Taken. Dvitīyā reaches neither midday; the rule takes the second day.

madhyāhna begins 12:42  13:30 madhyāhna ends
11:5412:1812:4213:0613:3013:5414:18

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 13:39 on Fri 22 Jun to 10:39 on Sat 23 Jun.

    2001-06-22T09:09:29Z → 2001-06-23T06:08:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:42–13:30 on the 22nd, 12:42–13:30 on the 23rd.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 0 of 48 on the 23rd.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: paraviddha → second-day · margin 553 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 2001: Saturday 23 June.

    confidence: determinate

Say it like this

In Tehran, Rathayātrā 2001 falls on Saturday 23 June. Dvitīyā runs from 13:39 on Fri 22 Jun to 10:39 on Sat 23 Jun, and reaches madhyāhna on neither day.

ahargana.org/tehran/festivals/2001/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 23 Jun
Ahargaṇa, classicalDisc centre, no refractionSat 23 Jun
compat-drikpanchangComparison profileFri 22 Jun
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/rathayatra · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Dvitīyā
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 102

“S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102. The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceDvitīyāMadhyāhna 22ndCoveredMadhyāhna 23rdCoveredRuled
Los Angeles02:09 → 23:0912:3148 min12:310 min22 Jun
Chicago04:09 → 01:0912:2948 min12:290 min22 Jun
Jersey City05:09 → 02:0912:3448 min12:350 min22 Jun
Port of Spain05:09 → 02:0911:4448 min11:440 min22 Jun
London10:09 → 07:0912:3848 min12:390 min22 Jun
Durban11:09 → 08:0911:3448 min11:340 min22 Jun
Dubai13:09 → 10:0911:570 min11:570 min23 Jun
Delhi14:39 → 11:3911:590 min11:590 min23 Jun
Kolkata14:39 → 11:3911:140 min11:1524 min23 Jun
Singapore17:09 → 14:0912:430 min12:4348 min23 Jun
Sydney19:09 → 16:0911:330 min11:3348 min23 Jun
Suva21:09 → 18:0911:440 min11:4448 min23 Jun
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rathayatra@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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