Ruling · Rathayātrā · 2096

Thursday 21 June

Boundaryin Chattogram, under the Rashtriya Panchang method. A threshold is only 4 min 20 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 Thursday 21 June

Taken. The only midday Dvitīyā reaches.

madhyāhna begins 11:31  12:19 madhyāhna ends
Dvitīyā begins 12:14:49
10:4311:0711:3111:5512:1912:4313:07

4 of 48 minutes covered, the last 4

Midday of Friday 22 June

Dvitīyā is absent from madhyāhna. Not taken.

madhyāhna begins 11:31  12:19 madhyāhna ends
10:4311:0711:3111:5512:1912:4313:07

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 12:15 on Thu 21 Jun to 09:40 on Fri 22 Jun.

    2096-06-21T06:14:50Z → 2096-06-22T03:39:44Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:31–12:19 on the 21st, 11:31–12:19 on the 22nd.

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

  3. 03

    Rule

    Dvitīyā must be present during madhyāhna. It covers 4 of 48 minutes on the 21st and 0 of 48 on the 22nd.

    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 260 s < 300 s

  5. 05

    Ruling

    Rathayātrā, Chattogram, 2096: Thursday 21 June.

    confidence: boundary (margin)

Say it like this

In Chattogram, Rathayātrā 2096 falls on Thursday 21 June. Dvitīyā runs from 12:15 on Thu 21 Jun to 09:40 on Fri 22 Jun and covers 4 of 48 minutes of madhyāhna that midday. It is 4 min 20 s from a threshold: treat the date as contested.

ahargana.org/chattogram/festivals/2096/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 21 Jun
Ahargaṇa, classicalDisc centre, no refractionThu 21 Jun
compat-drikpanchangComparison profileThu 21 Jun
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 21stCoveredMadhyāhna 22ndCoveredRuled
Los Angeles23:15 → 20:4012:3248 min12:320 min21 Jun
Chicago01:15 → 22:4012:2948 min12:290 min21 Jun
Jersey City02:15 → 23:4012:3548 min12:350 min21 Jun
Port of Spain02:15 → 23:4011:4548 min11:450 min21 Jun
London07:15 → 04:4012:3948 min12:390 min21 Jun
Durban08:15 → 05:4011:3448 min11:350 min21 Jun
Dubai10:15 → 07:4011:5748 min11:570 min21 Jun
Delhi11:45 → 09:1012:0048 min12:000 min21 Jun
Kolkata11:45 → 09:1011:1518 min11:150 min21 Jun
Singapore14:15 → 11:4012:430 min12:430 min22 Jun
Sydney16:15 → 13:4011:340 min11:3448 min22 Jun
Suva18:15 → 15:4011:450 min11:4548 min22 Jun
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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