Ruling · Rāma Navamī · 2083

Saturday 27 March

Boundaryin Daqing, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.

Decide it for

46°35′ N 125°00′ E · Asia/Shanghai · GeoNames 2037860

The two middays

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

Midday of Saturday 27 March

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

madhyāhna begins 11:22  12:10 madhyāhna ends
Navamī begins 10:36:37
10:3410:5811:2211:4612:1012:3412:58

48 of 48 minutes covered

Midday of Sunday 28 March

Qualifies with 20 of 48 minutes. Not taken.

madhyāhna begins 11:22  12:10 madhyāhna ends
Navamī ends 11:41:21
10:3410:5811:2211:4612:1012:3412:58

20 of 48 minutes covered, the first 20

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 10:37 on Sat 27 Mar to 11:41 on Sun 28 Mar.

    2083-03-27T02:36:38Z → 2083-03-28T03:41:21Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 27th, 11:22–12:10 on the 28th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 27th and 20 of 48 on the 28th.

    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 1176 s

  5. 05

    Ruling

    Rāma Navamī, Daqing, 2083: Saturday 27 March.

    confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Rāma Navamī 2083 falls on Saturday 27 March. Navamī runs from 10:37 on Sat 27 Mar to 11:41 on Sun 28 Mar and covers all of madhyāhna that midday. It also reaches the next midday for 20 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/daqing/festivals/2083/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 27 Mar
Ahargaṇa, classicalDisc centre, no refractionSat 27 Mar
compat-drikpanchangComparison profileSat 27 Mar
No institution has a recorded ruling for Daqing.

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 27thCoveredMadhyāhna 28thCoveredRuled
Los Angeles19:37 → 20:4112:3548 min12:340 min27 Mar
Chicago21:37 → 22:4112:3248 min12:320 min27 Mar
Jersey City22:37 → 23:4112:3848 min12:380 min27 Mar
Port of Spain22:37 → 23:4111:4848 min11:470 min27 Mar
London02:37 → 04:4111:4348 min12:420 min27 Mar
Durban04:37 → 05:4111:3748 min11:370 min27 Mar
Dubai06:37 → 07:4112:0148 min12:000 min27 Mar
Delhi08:07 → 09:1112:0348 min12:030 min27 Mar
Kolkata08:07 → 09:1111:1848 min11:180 min27 Mar
Singapore10:37 → 11:4112:4648 min12:460 min27 Mar
Sydney13:37 → 14:4112:370 min12:3648 min28 Mar
Suva14:37 → 15:4111:480 min11:4848 min28 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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