Ruling · Durgā Navamī · 2082

Thursday 29 October

Determinatein Perth, under the Rashtriya Panchang method. Clear of every threshold by 138 minutes.

Decide it for

PerthDelhiKolkataSingaporeSydneyJersey City

31°57′ S 115°52′ E · Australia/Perth · GeoNames 2063523

The two middays

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

Midday of Thursday 29 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:37  12:25 madhyāhna ends
10:4911:1311:3712:0112:2512:4913:13

48 of 48 minutes covered

Midday of Friday 30 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:37  12:25 madhyāhna ends
10:4911:1311:3712:0112:2512:4913:13

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 08:25 on Thu 29 Oct to 09:19 on Fri 30 Oct.

    2082-10-29T00:25:10Z → 2082-10-30T01:18:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 29th, 11:37–12:25 on the 30th.

    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 29th and 0 of 48 on the 30th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: purvaviddha → only-day · margin 8271 s

  5. 05

    Ruling

    Durgā Navamī, Perth, 2082: Thursday 29 October.

    confidence: determinate

Say it like this

In Perth, Durgā Navamī 2082 falls on Thursday 29 October. Navamī runs from 08:25 on Thu 29 Oct to 09:19 on Fri 30 Oct and covers all of madhyāhna that midday.

ahargana.org/perth/festivals/2082/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 29 Oct
Ahargaṇa, classicalDisc centre, no refractionThu 29 Oct
compat-drikpanchangComparison profileThu 29 Oct
No institution has a recorded ruling for Perth.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/durga-navami · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Navamī
Kāla
Madhyāhna
Priority
Pūrvaviddhā
Tie-break
First day
Reference
CRC 1955, p. 104

“S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 29thCoveredMadhyāhna 30thCoveredRuled
Los Angeles17:25 → 18:1912:1348 min12:130 min29 Oct
Chicago19:25 → 20:1912:1048 min12:100 min29 Oct
Jersey City20:25 → 21:1912:1648 min12:160 min29 Oct
Port of Spain20:25 → 21:1911:2648 min11:260 min29 Oct
London00:25 → 01:1911:2048 min11:200 min29 Oct
Durban02:25 → 03:1911:1648 min11:160 min29 Oct
Dubai04:25 → 05:1911:3948 min11:380 min29 Oct
Delhi05:55 → 06:4911:4148 min11:410 min29 Oct
Kolkata05:55 → 06:4910:5648 min10:560 min29 Oct
Singapore08:25 → 09:1912:2548 min12:240 min29 Oct
Sydney11:25 → 12:1912:1548 min12:154 min29 Oct
Suva12:25 → 13:1911:260 min11:2648 min30 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
durga-navami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa