Ruling · Rāma Navamī · 1925

Thursday 2 April

Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 494 minutes.

Decide it for

TehranDelhiKolkataSingaporeSydneyJersey City

35°42′ N 51°25′ E · Asia/Tehran · GeoNames 112931

The two middays

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

Midday of Thursday 2 April

Taken. The only midday Navamī reaches.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

48 of 48 minutes covered

Midday of Friday 3 April

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

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 00:55 on Thu 2 Apr to 03:25 on Fri 3 Apr.

    1925-04-01T21:29:48Z → 1925-04-03T00:00:22Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 2nd, 11:39–12:27 on the 3rd.

    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 2nd and 0 of 48 on the 3rd.

    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 29624 s

  5. 05

    Ruling

    Rāma Navamī, Tehran, 1925: Thursday 2 April.

    confidence: determinate

Say it like this

In Tehran, Rāma Navamī 1925 falls on Thursday 2 April. Navamī runs from 00:55 on Thu 2 Apr to 03:25 on Fri 3 Apr and covers all of madhyāhna that midday.

ahargana.org/tehran/festivals/1925/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 2 Apr
Ahargaṇa, classicalDisc centre, no refractionThu 2 Apr
compat-drikpanchangComparison profileThu 2 Apr
No institution has a recorded ruling for Tehran.

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 1stCoveredMadhyāhna 3rdCoveredRuled
Los Angeles13:30 → 16:0011:330 min11:330 min2 Apr
Chicago15:30 → 18:0011:310 min11:300 min2 Apr
Jersey City16:30 → 19:0011:370 min11:360 min2 Apr
Port of Spain17:30 → 20:0011:460 min11:460 min2 Apr
London21:30 → 00:0011:410 min11:400 min2 Apr
Durban23:30 → 02:0011:360 min11:350 min2 Apr
Dubai01:30 → 04:0011:590 min11:580 min2 Apr
Delhi03:00 → 05:3012:010 min12:010 min2 Apr
Kolkata03:00 → 05:3011:170 min11:160 min2 Apr
Singapore04:30 → 07:0011:450 min11:440 min2 Apr
Sydney07:30 → 10:0011:350 min11:350 min2 Apr
Suva09:30 → 12:0011:460 min11:4615 min2 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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