Ruling · Rathayātrā · 2003

Tuesday 1 July

Boundaryin Phoenix, under the Rashtriya Panchang method. A threshold is only 3 min 20 s away. Say “contested”.

Decide it for

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two middays

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

Midday of Monday 30 June

Qualifies with 26 of 48 minutes. Not taken.

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvitīyā begins 12:30:16
11:2011:4412:0812:3212:5613:2013:44

26 of 48 minutes covered, the last 26

Midday of Tuesday 1 July

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

madhyāhna begins 12:08  12:56 madhyāhna ends
Dvitīyā ends 12:52:43
11:2011:4412:0812:3212:5613:2013:44

45 of 48 minutes covered, the first 45

Dvitīyā presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 12:30 on Mon 30 Jun to 12:53 on Tue 1 Jul.

    2003-06-30T19:30:17Z → 2003-07-01T19:52:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:08–12:56 on the 30th, 12:08–12:56 on the 1st.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 26 of 48 minutes on the 30th and 45 of 48 on the 1st.

    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 200 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Phoenix, 2003: Tuesday 1 July.

    confidence: boundary (margin)

Say it like this

In Phoenix, Rathayātrā 2003 falls on Tuesday 1 July. Dvitīyā runs from 12:30 on Mon 30 Jun to 12:53 on Tue 1 Jul and covers 45 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 26 minutes; by the rule the second midday is taken. It is 3 min 20 s from a threshold: treat the date as contested.

ahargana.org/phoenix/festivals/2003/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 1 Jul
Ahargaṇa, classicalDisc centre, no refractionTue 1 Jul
compat-drikpanchangComparison profileTue 1 Jul
No institution has a recorded ruling for Phoenix.

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 30thCoveredMadhyāhna 1stCoveredRuled
Los Angeles12:30 → 12:5312:3348 min12:3320 min1 Jul
Chicago14:30 → 14:5312:300 min12:3048 min1 Jul
Jersey City15:30 → 15:5312:360 min12:3648 min1 Jul
Port of Spain15:30 → 15:5311:460 min11:4648 min1 Jul
London20:30 → 20:5312:400 min12:4048 min1 Jul
Durban21:30 → 21:5311:350 min11:3648 min1 Jul
Dubai23:30 → 23:5311:580 min11:5848 min1 Jul
Delhi01:00 → 01:2312:010 min12:0148 min1 Jul
Kolkata01:00 → 01:2311:160 min11:1648 min1 Jul
Singapore03:30 → 03:5312:440 min12:4448 min1 Jul
Sydney05:30 → 05:5311:350 min11:3548 min1 Jul
Suva07:30 → 07:5311:460 min11:4648 min1 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