Ruling · Mahānavamī · 1910

Wednesday 12 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 56 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 Wednesday 12 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

48 of 48 minutes covered

Midday of Thursday 13 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
10:5211:1611:4012:0412:2812:5213:16

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 10:13 on Wed 12 Oct to 10:45 on Thu 13 Oct.

    1910-10-12T02:13:30Z → 1910-10-13T02:44:51Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:41–12:29 on the 12th, 11:40–12:28 on the 13th.

    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 12th and 0 of 48 on the 13th.

    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 3334 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 1910: Wednesday 12 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 1910 falls on Wednesday 12 October. Navamī runs from 10:13 on Wed 12 Oct to 10:45 on Thu 13 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1910/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingWed 12 Oct
Ahargaṇa, classicalDisc centre, no refractionWed 12 Oct
compat-drikpanchangComparison profileWed 12 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 12thCoveredMadhyāhna 13thCoveredRuled
Los Angeles18:13 → 18:4511:1548 min11:150 min12 Oct
Chicago20:13 → 20:4511:1348 min11:130 min12 Oct
Jersey City21:13 → 21:4511:1948 min11:180 min12 Oct
Port of Spain22:13 → 22:4511:2948 min11:280 min12 Oct
London02:13 → 02:4511:2348 min11:230 min12 Oct
Durban04:13 → 04:4511:1948 min11:190 min12 Oct
Dubai05:54 → 06:2611:2248 min11:220 min12 Oct
Delhi07:43 → 08:1511:4448 min11:430 min12 Oct
Kolkata07:43 → 08:1510:5948 min10:590 min12 Oct
Singapore09:13 → 09:4511:2748 min11:270 min12 Oct
Sydney12:13 → 12:4511:180 min11:1848 min13 Oct
Suva14:08 → 14:4011:240 min11:2448 min13 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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