Ruling · Rāma Navamī (Rāma Jayantī) · 2011

Tuesday 12 April

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 220 minutes.

Decide it for

DaqingDelhiKolkataSingaporeSydneyJersey City

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 Tuesday 12 April

Taken. The only midday Navamī reaches.

madhyāhna begins 11:17  12:05 madhyāhna ends
10:2910:5311:1711:4112:0512:2912:53

48 of 48 minutes covered

Midday of Wednesday 13 April

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:17  12:05 madhyāhna ends
10:2910:5311:1711:4112:0512:2912:53

0 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Navamī runs from 07:37 on Tue 12 Apr to 06:09 on Wed 13 Apr.

    2011-04-11T23:37:26Z → 2011-04-12T22:08:42Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:17–12:05 on the 12th, 11:17–12:05 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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: unstated → only-day · margin 13199 s

  5. 05

    Ruling

    Rāma Navamī, Daqing, 2011: Tuesday 12 April.

    confidence: determinate

Say it like this

In Daqing, Rāma Navamī 2011 falls on Tuesday 12 April. Navamī runs from 07:37 on Tue 12 Apr to 06:09 on Wed 13 Apr and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2011/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 12 Apr
Ahargaṇa, classicalDisc centre, no refractionTue 12 Apr
compat-drikpanchangComparison profileTue 12 Apr
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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles16:37 → 15:0912:300 min12:3048 min12 Apr
Chicago18:37 → 17:0912:280 min12:2848 min12 Apr
Jersey City19:37 → 18:0912:340 min12:3448 min12 Apr
Port of Spain19:37 → 18:0911:430 min11:4348 min12 Apr
London00:37 → 23:0912:380 min12:3848 min12 Apr
Durban01:37 → 00:0911:330 min11:3348 min12 Apr
Dubai03:37 → 02:0911:560 min11:5648 min12 Apr
Delhi05:07 → 03:3911:580 min11:5848 min12 Apr
Kolkata05:07 → 03:3911:140 min11:1448 min12 Apr
Singapore07:37 → 06:0912:420 min12:4248 min12 Apr
Sydney09:37 → 08:0911:320 min11:3248 min12 Apr
Suva11:37 → 10:0911:430 min11:4348 min12 Apr
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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