Ruling · Durgā Navamī · 2009

Tuesday 27 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 576 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Monday 26 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

0 of 48 minutes covered

Midday of Tuesday 27 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:38  12:26 madhyāhna ends
10:5011:1411:3812:0212:2612:5013:14

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 22:02 on Mon 26 Oct to 00:32 on Wed 28 Oct.

    2009-10-26T14:01:59Z → 2009-10-27T16:32:02Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:38–12:26 on the 26th, 11:38–12:26 on the 27th.

    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 26th and 48 of 48 on the 27th.

    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 34566 s

  5. 05

    Ruling

    Durgā Navamī, Baoding, 2009: Tuesday 27 October.

    confidence: determinate

Say it like this

In Baoding, Durgā Navamī 2009 falls on Tuesday 27 October. Navamī runs from 22:02 on Mon 26 Oct to 00:32 on Wed 28 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2009/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 27 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 27 Oct
compat-drikpanchangComparison profileTue 27 Oct
No institution has a recorded ruling for Baoding.

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 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles07:02 → 09:3212:1348 min12:130 min26 Oct
Chicago09:02 → 11:3212:1048 min12:100 min26 Oct
Jersey City10:02 → 12:3212:1648 min12:1616 min26 Oct
Port of Spain10:02 → 12:3211:2648 min11:2648 min26 Oct
London14:02 → 16:3211:200 min11:2048 min27 Oct
Durban16:02 → 18:3211:160 min11:1648 min27 Oct
Dubai18:02 → 20:3211:390 min11:3848 min27 Oct
Delhi19:32 → 22:0211:410 min11:4148 min27 Oct
Kolkata19:32 → 22:0210:560 min10:5648 min27 Oct
Singapore22:02 → 00:3212:250 min12:2448 min27 Oct
Sydney01:02 → 03:3212:150 min12:1548 min27 Oct
Suva02:02 → 04:3211:260 min11:2648 min27 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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