Ruling · Durgā Navamī · 1949

Sunday 30 October

Determinatein Jiading, under the Rashtriya Panchang method. Clear of every threshold by 81 minutes.

Decide it for

JiadingDelhiKolkataSingaporeSydneyJersey City

31°23′ N 121°15′ E · Asia/Shanghai · GeoNames 1806508

The two middays

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

Midday of Saturday 29 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:15  12:03 madhyāhna ends
10:2710:5111:1511:3912:0312:2712:51

0 of 48 minutes covered

Midday of Sunday 30 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:15  12:03 madhyāhna ends
10:2710:5111:1511:3912:0312:2712:51

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 13:23 on Sat 29 Oct to 14:35 on Sun 30 Oct.

    1949-10-29T05:23:20Z → 1949-10-30T06:34:40Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:15–12:03 on the 29th, 11:15–12:03 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 0 of 48 minutes on the 29th and 48 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 4843 s

  5. 05

    Ruling

    Durgā Navamī, Jiading, 1949: Sunday 30 October.

    confidence: determinate

Say it like this

In Jiading, Durgā Navamī 1949 falls on Sunday 30 October. Navamī runs from 13:23 on Sat 29 Oct to 14:35 on Sun 30 Oct and covers all of madhyāhna that midday.

ahargana.org/jiading/festivals/1949/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 30 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 30 Oct
compat-drikpanchangComparison profileSun 30 Oct
No institution has a recorded ruling for Jiading.

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 Angeles21:23 → 22:3511:1348 min11:120 min29 Oct
Chicago23:23 → 00:3511:1048 min11:100 min29 Oct
Jersey City00:23 → 01:3511:1648 min11:160 min29 Oct
Port of Spain01:23 → 02:3511:2648 min11:260 min29 Oct
London06:23 → 06:3512:2048 min11:200 min29 Oct
Durban07:23 → 08:3511:1648 min11:160 min29 Oct
Dubai09:23 → 10:3511:3848 min11:380 min29 Oct
Delhi10:53 → 12:0511:4148 min11:4124 min29 Oct
Kolkata10:53 → 12:0510:5648 min10:5648 min29 Oct
Singapore12:53 → 14:0511:540 min11:5448 min30 Oct
Sydney15:23 → 16:3511:150 min11:1548 min30 Oct
Suva17:23 → 18:3511:260 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

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