Ruling · Rāma Navamī (Rāma Jayantī) · 1981

Sunday 12 April

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 265 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 Sunday 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 Monday 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 06:53 on Sun 12 Apr to 06:47 on Mon 13 Apr.

    1981-04-11T22:52:37Z → 1981-04-12T22:47:12Z

  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 15883 s

  5. 05

    Ruling

    Rāma Navamī, Daqing, 1981: Sunday 12 April.

    confidence: determinate

Say it like this

In Daqing, Rāma Navamī 1981 falls on Sunday 12 April. Navamī runs from 06:53 on Sun 12 Apr to 06:47 on Mon 13 Apr and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1981/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 12 Apr
Ahargaṇa, classicalDisc centre, no refractionSun 12 Apr
compat-drikpanchangComparison profileSun 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 Angeles14:53 → 14:4711:300 min11:3048 min12 Apr
Chicago16:53 → 16:4711:280 min11:2848 min12 Apr
Jersey City17:53 → 17:4711:340 min11:3348 min12 Apr
Port of Spain18:53 → 18:4711:430 min11:4348 min12 Apr
London23:53 → 23:4712:380 min12:3848 min12 Apr
Durban00:53 → 00:4711:330 min11:3348 min12 Apr
Dubai02:53 → 02:4711:560 min11:5648 min12 Apr
Delhi04:23 → 04:1711:580 min11:5848 min12 Apr
Kolkata04:23 → 04:1711:140 min11:1448 min12 Apr
Singapore06:23 → 06:1712:120 min12:1148 min12 Apr
Sydney08:53 → 08:4711:320 min11:3248 min12 Apr
Suva10:53 → 10:4711:430 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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