Ruling · Rāma Navamī · 2007

Tuesday 27 March

Boundaryin Chattogram, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. 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 Monday 26 March

Qualifies with 21 of 48 minutes. Not taken.

madhyāhna begins 11:35  12:23 madhyāhna ends
Navamī begins 12:02:11
10:4711:1111:3511:5912:2312:4713:11

21 of 48 minutes covered, the last 21

Midday of Tuesday 27 March

Taken. Both middays qualify; the rule is silent, and this one is covered longer.

madhyāhna begins 11:34  12:22 madhyāhna ends
Navamī ends 12:06:55
10:4611:1011:3411:5812:2212:4613:10

33 of 48 minutes covered, the first 33

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 12:02 on Mon 26 Mar to 12:07 on Tue 27 Mar.

    2007-03-26T06:02:11Z → 2007-03-27T06:06:56Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:35–12:23 on the 26th, 11:34–12:22 on the 27th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 21 of 48 minutes on the 26th and 33 of 48 on the 27th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 928 s

  5. 05

    Ruling

    Rāma Navamī, Chattogram, 2007: Tuesday 27 March.

    confidence: boundary (tie-break-unstated)

Say it like this

In Chattogram, Rāma Navamī 2007 falls on Tuesday 27 March. Navamī runs from 12:02 on Mon 26 Mar to 12:07 on Tue 27 Mar and covers 33 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 21 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/chattogram/festivals/2007/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 27 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 27 Mar
compat-drikpanchangComparison profileTue 27 Mar
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/rama-navami · ruleset 2026.3-draft

Month
Caitra, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102. The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles23:02 → 23:0712:3548 min12:350 min26 Mar
Chicago01:02 → 01:0712:3348 min12:320 min26 Mar
Jersey City02:02 → 02:0712:3848 min12:380 min26 Mar
Port of Spain02:02 → 02:0711:4848 min11:480 min26 Mar
London07:02 → 07:0712:4348 min12:430 min26 Mar
Durban08:02 → 08:0711:3748 min11:370 min26 Mar
Dubai10:02 → 10:0712:0148 min12:000 min26 Mar
Delhi11:32 → 11:3712:0348 min12:030 min26 Mar
Kolkata11:32 → 11:3711:1934 min11:1819 min26 Mar
Singapore14:02 → 14:0712:460 min12:4648 min27 Mar
Sydney16:02 → 16:0711:370 min11:3748 min27 Mar
Suva18:02 → 18:0711:480 min11:4848 min27 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
rama-navami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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