Ruling · Rathayātrā · 2075

Monday 15 July

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 19 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 14 July

Qualifies with 29 of 48 minutes. Not taken.

madhyāhna begins 11:46  12:34 madhyāhna ends
Dvitīyā begins 12:05:14
10:5811:2211:4612:1012:3412:5813:22

29 of 48 minutes covered, the last 29

Midday of Monday 15 July

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

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

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 12:05 on Sun 14 Jul to 14:12 on Mon 15 Jul.

    2075-07-14T08:35:15Z → 2075-07-15T10:42:06Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 14th, 11:46–12:34 on the 15th.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 29 of 48 minutes on the 14th and 48 of 48 on the 15th.

    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 1133 s

  5. 05

    Ruling

    Rathayātrā, Tehran, 2075: Monday 15 July.

    confidence: determinate

Say it like this

In Tehran, Rathayātrā 2075 falls on Monday 15 July. Dvitīyā runs from 12:05 on Sun 14 Jul to 14:12 on Mon 15 Jul and covers all of madhyāhna that midday. It also reaches the previous midday for 29 minutes; by the rule the second midday is taken.

ahargana.org/tehran/festivals/2075/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 15 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 15 Jul
compat-drikpanchangComparison profileMon 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 14thCoveredMadhyāhna 15thCoveredRuled
Los Angeles01:35 → 03:4212:3548 min12:350 min14 Jul
Chicago03:35 → 05:4212:3348 min12:330 min14 Jul
Jersey City04:35 → 06:4212:3848 min12:380 min14 Jul
Port of Spain04:35 → 06:4211:4848 min11:480 min14 Jul
London09:35 → 11:4212:4248 min12:420 min14 Jul
Durban10:35 → 12:4211:3848 min11:3848 min15 Jul
Dubai12:35 → 14:4212:0114 min12:0148 min15 Jul
Delhi14:05 → 16:1212:030 min12:0348 min15 Jul
Kolkata14:05 → 16:1211:190 min11:1948 min15 Jul
Singapore16:35 → 18:4212:470 min12:4748 min15 Jul
Sydney18:35 → 20:4211:370 min11:3848 min15 Jul
Suva20:35 → 22:4211:490 min11:4948 min15 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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