Ruling · Rathayātrā · 2045

Saturday 15 July

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 86 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 Saturday 15 July

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

48 of 48 minutes covered

Midday of Sunday 16 July

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
10:5811:2211:4612:1012:3412:5813:22

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 10:20 on Sat 15 Jul to 06:44 on Sun 16 Jul.

    2045-07-15T06:50:27Z → 2045-07-16T03:14:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 15th, 11:46–12:34 on the 16th.

    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 15th and 0 of 48 on the 16th.

    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 5148 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 2045: Saturday 15 July.

    confidence: determinate

Say it like this

In Tehran, Rathayātrā 2045 falls on Saturday 15 July. Dvitīyā runs from 10:20 on Sat 15 Jul to 06:44 on Sun 16 Jul and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2045/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 15 Jul
Ahargaṇa, classicalDisc centre, no refractionSat 15 Jul
compat-drikpanchangComparison profileSat 15 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles23:50 → 20:1412:3548 min12:350 min15 Jul
Chicago01:50 → 22:1412:3348 min12:330 min15 Jul
Jersey City02:50 → 23:1412:3848 min12:380 min15 Jul
Port of Spain02:50 → 23:1411:4848 min11:480 min15 Jul
London07:50 → 04:1412:4248 min12:420 min15 Jul
Durban08:50 → 05:1411:3848 min11:380 min15 Jul
Dubai10:50 → 07:1412:0148 min12:010 min15 Jul
Delhi12:20 → 08:4412:0331 min12:030 min15 Jul
Kolkata12:20 → 08:4411:190 min11:190 min16 Jul
Singapore14:50 → 11:1412:470 min12:470 min16 Jul
Sydney16:50 → 13:1411:370 min11:3748 min16 Jul
Suva18:50 → 15:1411:480 min11:4948 min16 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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