Ruling · Durgā Navamī · 2028

Wednesday 25 October

Determinatein Chicago, under the Rashtriya Panchang method. Clear of every threshold by 14 minutes.

Decide it for

ChicagoDelhiKolkataSingaporeSydneyJersey City

41°51′ N 87°39′ W · America/Chicago · GeoNames 4887398

The two middays

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

Midday of Wednesday 25 October

Taken. Both middays qualify; the rule takes the first.

madhyāhna begins 12:10  12:58 madhyāhna ends
Navamī begins 12:44:26
11:2211:4612:1012:3412:5813:2213:46

14 of 48 minutes covered, the last 14

Midday of Thursday 26 October

Qualifies with 48 of 48 minutes. Not taken.

madhyāhna begins 12:10  12:58 madhyāhna ends
11:2211:4612:1012:3412:5813:2213:46

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 12:44 on Wed 25 Oct to 14:51 on Thu 26 Oct.

    2028-10-25T17:44:26Z → 2028-10-26T19:50:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:10–12:58 on the 25th, 12:10–12:58 on the 26th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 14 of 48 minutes on the 25th and 48 of 48 on the 26th.

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

  4. 04

    Tie-break

    Both middays qualify. Pūrvaviddhā: the first is taken.

    priority: purvaviddha → purvaviddha · margin 833 s

  5. 05

    Ruling

    Durgā Navamī, Chicago, 2028: Wednesday 25 October.

    confidence: determinate

Say it like this

In Chicago, Durgā Navamī 2028 falls on Wednesday 25 October. Navamī runs from 12:44 on Wed 25 Oct to 14:51 on Thu 26 Oct and covers 14 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.

ahargana.org/chicago/festivals/2028/durga-navami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 25 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 25 Oct
compat-drikpanchangComparison profileWed 25 Oct
No institution has a recorded ruling for Chicago.

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 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles10:44 → 12:5112:1348 min12:1338 min25 Oct
Chicago12:44 → 14:5112:1014 min12:1048 min25 Oct
Jersey City13:44 → 15:5112:160 min12:1648 min26 Oct
Port of Spain13:44 → 15:5111:260 min11:2648 min26 Oct
London18:44 → 20:5112:200 min12:2048 min26 Oct
Durban19:44 → 21:5111:160 min11:1648 min26 Oct
Dubai21:44 → 23:5111:390 min11:3948 min26 Oct
Delhi23:14 → 01:2111:410 min11:4148 min26 Oct
Kolkata23:14 → 01:2110:560 min10:5648 min26 Oct
Singapore01:44 → 03:5112:250 min12:2548 min26 Oct
Sydney04:44 → 06:5112:160 min12:1548 min26 Oct
Suva05:44 → 07:5111:270 min11:2648 min26 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