Ruling · Mahānavamī · 2006

Sunday 1 October

Determinatein Daqing, under the Rashtriya Panchang method. Clear of every threshold by 263 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 Sunday 1 October

Taken. The only midday Navamī reaches.

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

48 of 48 minutes covered

Midday of Monday 2 October

Navamī is absent from madhyāhna. Not taken.

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

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 06:42 on Sun 1 Oct to 05:27 on Mon 2 Oct.

    2006-09-30T22:42:16Z → 2006-10-01T21:27:29Z

  2. 02

    Kāla

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

    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 1st and 0 of 48 on the 2nd.

    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 15789 s

  5. 05

    Ruling

    Mahānavamī, Daqing, 2006: Sunday 1 October.

    confidence: determinate

Say it like this

In Daqing, Mahānavamī 2006 falls on Sunday 1 October. Navamī runs from 06:42 on Sun 1 Oct to 05:27 on Mon 2 Oct and covers all of madhyāhna that midday.

ahargana.org/daqing/festivals/2006/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSun 1 Oct
Ahargaṇa, classicalDisc centre, no refractionSun 1 Oct
compat-drikpanchangComparison profileSun 1 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 30thCoveredMadhyāhna 1stCoveredRuled
Los Angeles15:42 → 14:2712:190 min12:1848 min1 Oct
Chicago17:42 → 16:2712:160 min12:1648 min1 Oct
Jersey City18:42 → 17:2712:220 min12:2248 min1 Oct
Port of Spain18:42 → 17:2711:320 min11:3248 min1 Oct
London23:42 → 22:2712:260 min12:2648 min1 Oct
Durban00:42 → 23:2711:220 min11:2248 min1 Oct
Dubai02:42 → 01:2711:450 min11:4448 min1 Oct
Delhi04:12 → 02:5711:470 min11:4748 min1 Oct
Kolkata04:12 → 02:5711:020 min11:0248 min1 Oct
Singapore06:42 → 05:2712:310 min12:3048 min1 Oct
Sydney08:42 → 07:2711:220 min11:2148 min1 Oct
Suva10:42 → 09:2711:330 min11:3248 min1 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

About Ahargaṇa