Ruling · Rāma Navamī · 1921

Saturday 16 April

Determinatein Phoenix, under the Rashtriya Panchang method. Clear of every threshold by 19 minutes.

Decide it for

PhoenixDelhiKolkataSingaporeSydneyJersey City

33°27′ N 112°04′ W · America/Phoenix · GeoNames 5308655

The two middays

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

Midday of Friday 15 April

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:05  12:53 madhyāhna ends
11:1711:4112:0512:2912:5313:1713:41

0 of 48 minutes covered

Midday of Saturday 16 April

Taken. Navamī reaches neither midday; the rule takes the second day.

madhyāhna begins 12:04  12:52 madhyāhna ends
Navamī ends 11:45:11
11:1611:4012:0412:2812:5213:1613:40

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 14:03 on Fri 15 Apr to 11:45 on Sat 16 Apr.

    1921-04-15T21:03:03Z → 1921-04-16T18:45:12Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 15th, 12:04–12:52 on the 16th.

    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 15th and 0 of 48 on the 16th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 1151 s

  5. 05

    Ruling

    Rāma Navamī, Phoenix, 1921: Saturday 16 April.

    confidence: determinate

Say it like this

In Phoenix, Rāma Navamī 1921 falls on Saturday 16 April. Navamī runs from 14:03 on Fri 15 Apr to 11:45 on Sat 16 Apr, and reaches madhyāhna on neither day.

ahargana.org/phoenix/festivals/1921/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 16 Apr
Ahargaṇa, classicalDisc centre, no refractionSat 16 Apr
compat-drikpanchangComparison profileSat 16 Apr
No institution has a recorded ruling for Phoenix.

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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles13:03 → 10:4511:290 min11:290 min16 Apr
Chicago16:03 → 13:4512:270 min12:2748 min16 Apr
Jersey City16:03 → 13:4511:330 min11:3348 min16 Apr
Port of Spain17:03 → 14:4511:420 min11:4248 min16 Apr
London22:03 → 19:4512:370 min12:3748 min16 Apr
Durban23:03 → 20:4511:320 min11:3248 min16 Apr
Dubai01:03 → 22:4511:550 min11:5548 min16 Apr
Delhi02:33 → 00:1511:570 min11:5748 min16 Apr
Kolkata02:33 → 00:1511:130 min11:1348 min16 Apr
Singapore04:03 → 01:4511:410 min11:4148 min16 Apr
Sydney07:03 → 04:4511:310 min11:3148 min16 Apr
Suva09:03 → 06:4511:420 min11:4248 min16 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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