Ruling · Mahānavamī · 2030

Saturday 5 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 533 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 Friday 4 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 Saturday 5 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 23:01 on Fri 4 Oct to 21:24 on Sat 5 Oct.

    2030-10-04T15:01:19Z → 2030-10-05T13:23:48Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 4th, 11:42–12:30 on the 5th.

    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 4th and 48 of 48 on the 5th.

    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 32007 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2030: Saturday 5 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2030 falls on Saturday 5 October. Navamī runs from 23:01 on Fri 4 Oct to 21:24 on Sat 5 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2030/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 5 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 5 Oct
compat-drikpanchangComparison profileSat 5 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 4thCoveredMadhyāhna 5thCoveredRuled
Los Angeles08:01 → 06:2412:1748 min12:170 min4 Oct
Chicago10:01 → 08:2412:1548 min12:150 min4 Oct
Jersey City11:01 → 09:2412:2148 min12:200 min4 Oct
Port of Spain11:01 → 09:2411:3148 min11:300 min4 Oct
London16:01 → 14:2412:250 min12:2448 min5 Oct
Durban17:01 → 15:2411:210 min11:2148 min5 Oct
Dubai19:01 → 17:2411:430 min11:4348 min5 Oct
Delhi20:31 → 18:5411:460 min11:4548 min5 Oct
Kolkata20:31 → 18:5411:010 min11:0148 min5 Oct
Singapore23:01 → 21:2412:290 min12:2948 min5 Oct
Sydney01:01 → 23:2411:200 min11:2048 min5 Oct
Suva03:01 → 01:2411:310 min11:3148 min5 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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