Ruling · Rathayātrā · 2002

Thursday 11 July

Boundaryin Riyadh, under the Rashtriya Panchang method. A threshold is only 3 min 48 s away. Say “contested”.

Decide it for

RiyadhDelhiKolkataSingaporeSydneyJersey City

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Thursday 11 July

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:34  12:22 madhyāhna ends
Dvitīyā begins 11:38:16
10:4611:1011:3411:5812:2212:4613:10

44 of 48 minutes covered, the last 44

Midday of Friday 12 July

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:35  12:23 madhyāhna ends
10:4711:1111:3511:5912:2312:4713:11

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 11:38 on Thu 11 Jul to 09:27 on Fri 12 Jul.

    2002-07-11T08:38:16Z → 2002-07-12T06:27:25Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 11th, 11:35–12:23 on the 12th.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 44 of 48 minutes on the 11th and 0 of 48 on the 12th.

    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 228 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Riyadh, 2002: Thursday 11 July.

    confidence: boundary (margin)

Say it like this

In Riyadh, Rathayātrā 2002 falls on Thursday 11 July. Dvitīyā runs from 11:38 on Thu 11 Jul to 09:27 on Fri 12 Jul and covers 44 of 48 minutes of madhyāhna that midday. It is 3 min 48 s from a threshold: treat the date as contested.

ahargana.org/riyadh/festivals/2002/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 11 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 11 Jul
compat-drikpanchangComparison profileThu 11 Jul
No institution has a recorded ruling for Riyadh.

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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles01:38 → 23:2712:3448 min12:340 min11 Jul
Chicago03:38 → 01:2712:3248 min12:320 min11 Jul
Jersey City04:38 → 02:2712:3848 min12:380 min11 Jul
Port of Spain04:38 → 02:2711:4848 min11:480 min11 Jul
London09:38 → 07:2712:4248 min12:420 min11 Jul
Durban10:38 → 08:2711:3748 min11:380 min11 Jul
Dubai12:38 → 10:2712:0010 min12:000 min11 Jul
Delhi14:08 → 11:5712:020 min12:030 min12 Jul
Kolkata14:08 → 11:5711:180 min11:1839 min12 Jul
Singapore16:38 → 14:2712:460 min12:4648 min12 Jul
Sydney18:38 → 16:2711:370 min11:3748 min12 Jul
Suva20:38 → 18:2711:480 min11:4848 min12 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