Ruling · Rathayātrā · 2048

Sunday 12 July

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 57 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 Sunday 12 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 Monday 13 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 09:24 on Sun 12 Jul to 10:49 on Mon 13 Jul.

    2048-07-12T05:53:49Z → 2048-07-13T07:18:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 12th, 11:46–12:34 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 3437 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 2048: Sunday 12 July.

    confidence: determinate

Say it like this

In Tehran, Rathayātrā 2048 falls on Sunday 12 July. Dvitīyā runs from 09:24 on Sun 12 Jul to 10:49 on Mon 13 Jul and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/2048/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Jul
Ahargaṇa, classicalDisc centre, no refractionSun 12 Jul
compat-drikpanchangComparison profileMon 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles22:54 → 00:1912:3548 min12:350 min12 Jul
Chicago00:54 → 02:1912:3248 min12:320 min12 Jul
Jersey City01:54 → 03:1912:3848 min12:380 min12 Jul
Port of Spain01:54 → 03:1911:4848 min11:480 min12 Jul
London06:54 → 08:1912:4248 min12:420 min12 Jul
Durban07:54 → 09:1911:3848 min11:380 min12 Jul
Dubai09:54 → 11:1912:0148 min12:010 min12 Jul
Delhi11:24 → 12:4912:0348 min12:0346 min13 Jul
Kolkata11:24 → 12:4911:1842 min11:1848 min13 Jul
Singapore13:54 → 15:1912:460 min12:4748 min13 Jul
Sydney15:54 → 17:1911:370 min11:3748 min13 Jul
Suva17:54 → 19:1911:480 min11:4848 min13 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

About Ahargaṇa