Ruling · Rathayātrā · 1992

Thursday 2 July

Boundaryin Chattogram, under the Rashtriya Panchang method. A threshold is only 4 min 10 s away. Say “contested”.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two middays

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

Midday of Wednesday 1 July

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:32  12:20 madhyāhna ends
10:4411:0811:3211:5612:2012:4413:08

0 of 48 minutes covered

Midday of Thursday 2 July

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:33  12:21 madhyāhna ends
Dvitīyā ends 11:36:47
10:4511:0911:3311:5712:2112:4513:09

4 of 48 minutes covered, the first 4

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

How it was decided

  1. 01

    Aṅga

    Dvitīyā runs from 15:01 on Wed 1 Jul to 11:37 on Thu 2 Jul.

    1992-07-01T09:01:17Z → 1992-07-02T05:36:47Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:32–12:20 on the 1st, 11:33–12:21 on the 2nd.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 4 of 48 on the 2nd.

    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 250 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Chattogram, 1992: Thursday 2 July.

    confidence: boundary (margin)

Say it like this

In Chattogram, Rathayātrā 1992 falls on Thursday 2 July. Dvitīyā runs from 15:01 on Wed 1 Jul to 11:37 on Thu 2 Jul and covers 4 of 48 minutes of madhyāhna that midday. It is 4 min 10 s from a threshold: treat the date as contested.

ahargana.org/chattogram/festivals/1992/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 2 Jul
Ahargaṇa, classicalDisc centre, no refractionThu 2 Jul
compat-drikpanchangComparison profileThu 2 Jul
No institution has a recorded ruling for Chattogram.

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 1stCoveredMadhyāhna 2ndCoveredRuled
Los Angeles02:01 → 22:3712:3348 min12:330 min1 Jul
Chicago04:01 → 00:3712:3048 min12:310 min1 Jul
Jersey City05:01 → 01:3712:3648 min12:360 min1 Jul
Port of Spain05:01 → 01:3711:4648 min11:460 min1 Jul
London10:01 → 06:3712:4048 min12:400 min1 Jul
Durban11:01 → 07:3711:3648 min11:360 min1 Jul
Dubai13:01 → 09:3711:590 min11:590 min2 Jul
Delhi14:31 → 11:0712:010 min12:010 min2 Jul
Kolkata14:31 → 11:0711:160 min11:170 min2 Jul
Singapore17:01 → 13:3712:440 min12:4548 min2 Jul
Sydney19:01 → 15:3711:350 min11:3548 min2 Jul
Suva21:01 → 17:3711:460 min11:4648 min2 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