Ruling · Rathayātrā · 2048

Monday 13 July

Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 19 minutes.

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 Sunday 12 July

Qualifies with 29 of 48 minutes. Not taken.

madhyāhna begins 11:34  12:22 madhyāhna ends
Dvitīyā begins 11:53:48
10:4611:1011:3411:5812:2212:4613:10

29 of 48 minutes covered, the last 29

Midday of Monday 13 July

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

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

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 11:54 on Sun 12 Jul to 13:19 on Mon 13 Jul.

    2048-07-12T05:53:49Z → 2048-07-13T07:18:50Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:34–12:22 on the 12th, 11:35–12:23 on the 13th.

    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 12th and 48 of 48 on the 13th.

    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 1164 s

  5. 05

    Ruling

    Rathayātrā, Chattogram, 2048: Monday 13 July.

    confidence: determinate

Say it like this

In Chattogram, Rathayātrā 2048 falls on Monday 13 July. Dvitīyā runs from 11:54 on Sun 12 Jul to 13:19 on Mon 13 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/chattogram/festivals/2048/rathayatra · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 13 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 13 Jul
compat-drikpanchangComparison profileMon 13 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles22:54 → 00:1912:3548 min12:350 min12 Jul
Chicago00:54 → 02:1912:3248 min12:320 min12 Jul
Jersey City01:54 → 03:1912:3848 min12:380 min12 Jul
Port of Spain01:54 → 03:1911:4848 min11:480 min12 Jul
London06:54 → 08:1912:4248 min12:420 min12 Jul
Durban07:54 → 09:1911:3848 min11:380 min12 Jul
Dubai09:54 → 11:1912:0148 min12:010 min12 Jul
Delhi11:24 → 12:4912:0348 min12:0346 min13 Jul
Kolkata11:24 → 12:4911:1842 min11:1848 min13 Jul
Singapore13:54 → 15:1912:460 min12:4748 min13 Jul
Sydney15:54 → 17:1911:370 min11:3748 min13 Jul
Suva17:54 → 19:1911:480 min11:4848 min13 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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