Ruling · Mahānavamī · 2087

Monday 6 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 464 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

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

Midday of Sunday 5 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:43  12:31 madhyāhna ends
10:5511:1911:4312:0712:3112:5513:19

0 of 48 minutes covered

Midday of Monday 6 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

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 20:15 on Sun 5 Oct to 21:03 on Mon 6 Oct.

    2087-10-05T12:14:57Z → 2087-10-06T13:03:03Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 5th, 11:42–12:30 on the 6th.

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

  3. 03

    Rule

    Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.

    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 27861 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2087: Monday 6 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2087 falls on Monday 6 October. Navamī runs from 20:15 on Sun 5 Oct to 21:03 on Mon 6 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2087/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 6 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 6 Oct
compat-drikpanchangComparison profileMon 6 Oct
No institution has a recorded ruling for Baoding.

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 5thCoveredMadhyāhna 6thCoveredRuled
Los Angeles05:15 → 06:0312:1748 min12:170 min5 Oct
Chicago07:15 → 08:0312:1548 min12:150 min5 Oct
Jersey City08:15 → 09:0312:2148 min12:200 min5 Oct
Port of Spain08:15 → 09:0311:3148 min11:300 min5 Oct
London13:15 → 14:0312:250 min12:2448 min6 Oct
Durban14:15 → 15:0311:210 min11:2048 min6 Oct
Dubai16:15 → 17:0311:430 min11:4348 min6 Oct
Delhi17:45 → 18:3311:460 min11:4548 min6 Oct
Kolkata17:45 → 18:3311:010 min11:0148 min6 Oct
Singapore20:15 → 21:0312:290 min12:2948 min6 Oct
Sydney23:15 → 00:0312:200 min12:2048 min6 Oct
Suva00:15 → 01:0311:310 min11:3148 min6 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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