Ruling · Rathayātrā · 2016

Wednesday 6 July

Boundaryin Tehran, under the Rashtriya Panchang method. A threshold is only 3 min 07 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 Tuesday 5 July

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 12:45  13:33 madhyāhna ends
Dvitīyā begins 13:35:57
11:5712:2112:4513:0913:3313:5714:21

0 of 48 minutes covered

Midday of Wednesday 6 July

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

madhyāhna begins 12:45  13:33 madhyāhna ends
Dvitīyā ends 12:16:04
11:5712:2112:4513:0913:3313:5714:21

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 13:36 on Tue 5 Jul to 12:16 on Wed 6 Jul.

    2016-07-05T09:05:57Z → 2016-07-06T07:46:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:45–13:33 on the 5th, 12:45–13:33 on the 6th.

    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 5th and 0 of 48 on the 6th.

    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 187 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 2016: Wednesday 6 July.

    confidence: boundary (margin)

Say it like this

In Tehran, Rathayātrā 2016 falls on Wednesday 6 July. Dvitīyā runs from 13:36 on Tue 5 Jul to 12:16 on Wed 6 Jul, and reaches madhyāhna on neither day. It is 3 min 07 s from a threshold: treat the date as contested.

ahargana.org/tehran/festivals/2016/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 6 Jul
Ahargaṇa, classicalDisc centre, no refractionWed 6 Jul
compat-drikpanchangComparison profileWed 6 Jul
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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles02:06 → 00:4612:3448 min12:340 min5 Jul
Chicago04:06 → 02:4612:3148 min12:310 min5 Jul
Jersey City05:06 → 03:4612:3748 min12:370 min5 Jul
Port of Spain05:06 → 03:4611:4748 min11:470 min5 Jul
London10:06 → 08:4612:4148 min12:410 min5 Jul
Durban11:06 → 09:4611:3748 min11:370 min5 Jul
Dubai13:06 → 11:4611:590 min12:000 min6 Jul
Delhi14:36 → 13:1612:020 min12:0248 min6 Jul
Kolkata14:36 → 13:1611:170 min11:1748 min6 Jul
Singapore17:06 → 15:4612:450 min12:4548 min6 Jul
Sydney19:06 → 17:4611:360 min11:3648 min6 Jul
Suva21:06 → 19:4611:470 min11:4748 min6 Jul
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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