Ruling · Rāma Navamī · 2099

Tuesday 31 March

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 6 min 56 s.

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 Monday 30 March

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:21  12:09 madhyāhna ends
10:3310:5711:2111:4512:0912:3312:57

0 of 48 minutes covered

Midday of Tuesday 31 March

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

madhyāhna begins 11:21  12:09 madhyāhna ends
Navamī ends 11:14:01
10:3310:5711:2111:4512:0912:3312:57

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 13:01 on Mon 30 Mar to 11:14 on Tue 31 Mar.

    2099-03-30T05:00:45Z → 2099-03-31T03:14:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:21–12:09 on the 30th, 11:21–12:09 on the 31st.

    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 30th and 0 of 48 on the 31st.

    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 416 s

  5. 05

    Ruling

    Rāma Navamī, Daqing, 2099: Tuesday 31 March.

    confidence: determinate

Say it like this

In Daqing, Rāma Navamī 2099 falls on Tuesday 31 March. Navamī runs from 13:01 on Mon 30 Mar to 11:14 on Tue 31 Mar, and reaches madhyāhna on neither day.

ahargana.org/daqing/festivals/2099/rama-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 31 Mar
Ahargaṇa, classicalDisc centre, no refractionTue 31 Mar
compat-drikpanchangComparison profileTue 31 Mar
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles22:01 → 20:1412:3448 min12:340 min30 Mar
Chicago00:01 → 22:1412:3248 min12:310 min30 Mar
Jersey City01:01 → 23:1412:3748 min12:370 min30 Mar
Port of Spain01:01 → 23:1411:4748 min11:470 min30 Mar
London06:01 → 04:1412:4248 min12:410 min30 Mar
Durban07:01 → 05:1411:3648 min11:360 min30 Mar
Dubai09:01 → 07:1412:0048 min11:590 min30 Mar
Delhi10:31 → 08:4412:0248 min12:020 min30 Mar
Kolkata10:31 → 08:4411:1848 min11:170 min30 Mar
Singapore13:01 → 11:1412:4533 min12:450 min30 Mar
Sydney16:01 → 14:1412:360 min12:3548 min31 Mar
Suva17:01 → 15:1411:470 min11:4748 min31 Mar
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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