Ruling · Rāma Navamī · 1937

Monday 19 April

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 222 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 18 April

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:16  12:04 madhyāhna ends
10:2810:5211:1611:4012:0412:2812:52

0 of 48 minutes covered

Midday of Monday 19 April

Taken. The only midday Navamī reaches.

madhyāhna begins 11:16  12:04 madhyāhna ends
10:2810:5211:1611:4012:0412:2812:52

48 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 16:09 on Sun 18 Apr to 15:46 on Mon 19 Apr.

    1937-04-18T08:08:56Z → 1937-04-19T07:45:31Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:16–12:04 on the 18th, 11:16–12:04 on the 19th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 18th and 48 of 48 on the 19th.

    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 13308 s

  5. 05

    Ruling

    Rāma Navamī, Daqing, 1937: Monday 19 April.

    confidence: determinate

Say it like this

In Daqing, Rāma Navamī 1937 falls on Monday 19 April. Navamī runs from 16:09 on Sun 18 Apr to 15:46 on Mon 19 Apr and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1937/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 19 Apr
Ahargaṇa, classicalDisc centre, no refractionMon 19 Apr
compat-drikpanchangComparison profileMon 19 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 18thCoveredMadhyāhna 19thCoveredRuled
Los Angeles00:09 → 23:4611:2948 min11:280 min18 Apr
Chicago02:09 → 01:4611:2648 min11:260 min18 Apr
Jersey City03:09 → 02:4611:3248 min11:320 min18 Apr
Port of Spain04:09 → 03:4611:4248 min11:410 min18 Apr
London09:09 → 08:4612:3648 min12:360 min18 Apr
Durban10:09 → 09:4611:3148 min11:310 min18 Apr
Dubai12:09 → 11:4611:5433 min11:540 min18 Apr
Delhi13:39 → 13:1611:570 min11:5748 min19 Apr
Kolkata13:39 → 13:1611:120 min11:1248 min19 Apr
Singapore15:29 → 15:0612:000 min12:0048 min19 Apr
Sydney18:09 → 17:4611:300 min11:3048 min19 Apr
Suva20:09 → 19:4611:420 min11:4148 min19 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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