Ruling · Mahānavamī · 1906

Wednesday 26 September

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 593 minutes.

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 Wednesday 26 September

Taken. The only midday Navamī reaches.

madhyāhna begins 11:07  11:55 madhyāhna ends
10:1910:4311:0711:3111:5512:1912:43

48 of 48 minutes covered

Midday of Thursday 27 September

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:07  11:55 madhyāhna ends
10:1910:4311:0711:3111:5512:1912:43

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 01:14 on Wed 26 Sep to 23:34 on Wed 26 Sep.

    1906-09-25T17:13:59Z → 1906-09-26T15:33:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:07–11:55 on the 26th, 11:07–11:55 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 48 of 48 minutes on the 26th and 0 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 35598 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 1906: Wednesday 26 September.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 1906 falls on Wednesday 26 September. Navamī runs from 01:14 on Wed 26 Sep to 23:34 on Wed 26 Sep and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1906/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 26 Sep
Ahargaṇa, classicalDisc centre, no refractionWed 26 Sep
compat-drikpanchangComparison profileWed 26 Sep
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/mahanavami · ruleset 2026.3-draft

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

“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceNavamīMadhyāhna 25thCoveredMadhyāhna 26thCoveredRuled
Los Angeles09:14 → 07:3411:2148 min11:200 min25 Sep
Chicago11:14 → 09:3411:1848 min11:180 min25 Sep
Jersey City12:14 → 10:3411:240 min11:230 min26 Sep
Port of Spain13:14 → 11:3411:340 min11:340 min26 Sep
London17:14 → 15:3411:280 min11:2848 min26 Sep
Durban19:14 → 17:3411:240 min11:2448 min26 Sep
Dubai20:55 → 19:1511:280 min11:2748 min26 Sep
Delhi22:44 → 21:0411:490 min11:4948 min26 Sep
Kolkata22:44 → 21:0411:040 min11:0448 min26 Sep
Singapore00:14 → 22:3411:330 min11:3248 min26 Sep
Sydney03:14 → 01:3411:240 min11:2348 min26 Sep
Suva05:09 → 03:2911:300 min11:2948 min26 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahanavami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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