Ruling · Mahānavamī · 1940

Wednesday 9 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 483 minutes.

Decide it for

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 9 October

Taken. The only midday Navamī reaches.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

48 of 48 minutes covered

Midday of Thursday 10 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 12:03  12:51 madhyāhna ends
11:1511:3912:0312:2712:5113:1513:39

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 03:21 on Wed 9 Oct to 04:00 on Thu 10 Oct.

    1940-10-08T18:21:09Z → 1940-10-09T19:00:04Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 9th, 12:03–12:51 on the 10th.

    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 9th and 0 of 48 on the 10th.

    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 28961 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 1940: Wednesday 9 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 1940 falls on Wednesday 9 October. Navamī runs from 03:21 on Wed 9 Oct to 04:00 on Thu 10 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/1940/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 9 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 9 Oct
compat-drikpanchangComparison profileWed 9 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 8thCoveredMadhyāhna 9thCoveredRuled
Los Angeles10:21 → 11:0011:1648 min11:160 min8 Oct
Chicago12:21 → 13:0011:140 min11:1448 min9 Oct
Jersey City13:21 → 14:0011:200 min11:1948 min9 Oct
Port of Spain14:21 → 15:0011:300 min11:2948 min9 Oct
London19:21 → 20:0012:240 min12:2348 min9 Oct
Durban20:21 → 21:0011:200 min11:1948 min9 Oct
Dubai22:21 → 23:0011:420 min11:4248 min9 Oct
Delhi23:51 → 00:3011:450 min11:4448 min9 Oct
Kolkata23:51 → 00:3011:000 min11:0048 min9 Oct
Singapore01:41 → 02:2011:480 min11:4848 min9 Oct
Sydney04:21 → 05:0011:190 min11:1948 min9 Oct
Suva06:21 → 07:0011:300 min11:3048 min9 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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