Ruling · Rathayātrā · 1985

Thursday 20 June

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 220 minutes.

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 Wednesday 19 June

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

0 of 48 minutes covered

Midday of Thursday 20 June

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

48 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 16:10 on Wed 19 Jun to 16:23 on Thu 20 Jun.

    1985-06-19T12:40:00Z → 1985-06-20T12:52:38Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 19th, 11:42–12:30 on the 20th.

    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 19th and 48 of 48 on the 20th.

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

  4. 04

    Tie-break

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

    priority: paraviddha → only-day · margin 13226 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 1985: Thursday 20 June.

    confidence: determinate

Say it like this

In Tehran, Rathayātrā 1985 falls on Thursday 20 June. Dvitīyā runs from 16:10 on Wed 19 Jun to 16:23 on Thu 20 Jun and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/1985/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 20 Jun
Ahargaṇa, classicalDisc centre, no refractionThu 20 Jun
compat-drikpanchangComparison profileThu 20 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 19thCoveredMadhyāhna 20thCoveredRuled
Los Angeles05:40 → 05:5312:3048 min12:310 min19 Jun
Chicago07:40 → 07:5312:2848 min12:280 min19 Jun
Jersey City08:40 → 08:5312:3448 min12:340 min19 Jun
Port of Spain08:40 → 08:5311:4348 min11:440 min19 Jun
London13:40 → 13:5312:380 min12:3848 min20 Jun
Durban14:40 → 14:5311:330 min11:3348 min20 Jun
Dubai16:40 → 16:5311:560 min11:5648 min20 Jun
Delhi18:10 → 18:2311:580 min11:5948 min20 Jun
Kolkata18:10 → 18:2311:140 min11:1448 min20 Jun
Singapore20:40 → 20:5312:420 min12:4248 min20 Jun
Sydney22:40 → 22:5311:320 min11:3348 min20 Jun
Suva00:40 → 00:5311:430 min11:4448 min20 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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