Ruling · Mahānavamī · 1938

Sunday 2 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 22 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 Sunday 2 October

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

madhyāhna begins 11:05  11:53 madhyāhna ends
10:1710:4111:0511:2911:5312:1712:41

48 of 48 minutes covered

Midday of Monday 3 October

Qualifies with 22 of 48 minutes. Not taken.

madhyāhna begins 11:05  11:53 madhyāhna ends
Navamī ends 11:26:59
10:1710:4111:0511:2911:5312:1712:41

22 of 48 minutes covered, the first 22

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 08:59 on Sun 2 Oct to 11:27 on Mon 3 Oct.

    1938-10-02T00:59:17Z → 1938-10-03T03:27:00Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:05–11:53 on the 2nd, 11:05–11:53 on the 3rd.

    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 2nd and 22 of 48 on the 3rd.

    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 1324 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 1938: Sunday 2 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 1938 falls on Sunday 2 October. Navamī runs from 08:59 on Sun 2 Oct to 11:27 on Mon 3 Oct and covers all of madhyāhna that midday. It also reaches the next midday for 22 minutes; by the rule the first midday is taken.

ahargana.org/daqing/festivals/1938/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 2 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 2 Oct
compat-drikpanchangComparison profileSun 2 Oct
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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles16:59 → 19:2711:1848 min11:180 min2 Oct
Chicago18:59 → 21:2711:1648 min11:150 min2 Oct
Jersey City19:59 → 22:2711:2148 min11:210 min2 Oct
Port of Spain20:59 → 23:2711:3148 min11:310 min2 Oct
London01:59 → 03:2711:2648 min11:250 min2 Oct
Durban02:59 → 05:2711:2248 min11:210 min2 Oct
Dubai04:59 → 07:2711:4448 min11:440 min2 Oct
Delhi06:29 → 08:5711:4648 min11:460 min2 Oct
Kolkata06:29 → 08:5711:0248 min11:020 min2 Oct
Singapore08:19 → 10:4711:5048 min11:500 min2 Oct
Sydney10:59 → 13:2711:2148 min11:2148 min2 Oct
Suva12:59 → 15:2711:320 min11:3248 min3 Oct
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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