Ruling · Rathayātrā · 1960

Sunday 26 June

Boundaryin Tehran, under the Rashtriya Panchang method. A threshold is only 2 min 32 s away. Say “contested”.

Decide it for

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 Saturday 25 June

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

48 of 48 minutes covered

Midday of Sunday 26 June

Taken. Both middays qualify; the rule takes the second.

madhyāhna begins 11:43  12:31 madhyāhna ends
Dvitīyā ends 11:45:30
10:5511:1911:4312:0712:3112:5513:19

3 of 48 minutes covered, the first 3

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 09:22 on Sat 25 Jun to 11:46 on Sun 26 Jun.

    1960-06-25T05:51:59Z → 1960-06-26T08:15:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 25th, 11:43–12:31 on the 26th.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 25th and 3 of 48 on the 26th.

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

  4. 04

    Tie-break

    Both middays qualify. Paraviddhā: the second is taken.

    priority: paraviddha → paraviddha · margin 152 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 1960: Sunday 26 June.

    confidence: boundary (margin)

Say it like this

In Tehran, Rathayātrā 1960 falls on Sunday 26 June. Dvitīyā runs from 09:22 on Sat 25 Jun to 11:46 on Sun 26 Jun and covers 3 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 2 min 32 s from a threshold: treat the date as contested.

ahargana.org/tehran/festivals/1960/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 26 Jun
Ahargaṇa, classicalDisc centre, no refractionSun 26 Jun
compat-drikpanchangComparison profileSun 26 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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles22:52 → 01:1612:3248 min12:320 min25 Jun
Chicago00:52 → 03:1612:2948 min12:290 min25 Jun
Jersey City01:52 → 04:1612:3548 min12:350 min25 Jun
Port of Spain01:52 → 04:1611:4548 min11:450 min25 Jun
London06:52 → 09:1612:3948 min12:390 min25 Jun
Durban07:52 → 10:1611:3448 min11:350 min25 Jun
Dubai09:52 → 12:1611:5748 min11:5718 min26 Jun
Delhi11:22 → 13:4612:0048 min12:0048 min26 Jun
Kolkata11:22 → 13:4611:1541 min11:1548 min26 Jun
Singapore13:22 → 15:4612:130 min12:1348 min26 Jun
Sydney15:52 → 18:1611:340 min11:3448 min26 Jun
Suva17:52 → 20:1611:450 min11:4548 min26 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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