Ruling · Mahānavamī · 2043

Monday 12 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 406 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

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 Monday 12 October

Taken. The only midday Navamī reaches.

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

48 of 48 minutes covered

Midday of Tuesday 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 03:51 on Mon 12 Oct to 04:54 on Tue 13 Oct.

    2043-10-11T19:51:21Z → 2043-10-12T20:54:17Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 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 24357 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2043: Monday 12 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2043 falls on Monday 12 October. Navamī runs from 03:51 on Mon 12 Oct to 04:54 on Tue 13 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2043/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 12 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 12 Oct
compat-drikpanchangComparison profileMon 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 11thCoveredMadhyāhna 12thCoveredRuled
Los Angeles12:51 → 13:5412:1512 min12:1548 min11 Oct
Chicago14:51 → 15:5412:130 min12:1348 min12 Oct
Jersey City15:51 → 16:5412:190 min12:1848 min12 Oct
Port of Spain15:51 → 16:5411:290 min11:2848 min12 Oct
London20:51 → 21:5412:230 min12:2348 min12 Oct
Durban21:51 → 22:5411:190 min11:1948 min12 Oct
Dubai23:51 → 00:5411:410 min11:4148 min12 Oct
Delhi01:21 → 02:2411:440 min11:4348 min12 Oct
Kolkata01:21 → 02:2410:590 min10:5948 min12 Oct
Singapore03:51 → 04:5412:270 min12:2748 min12 Oct
Sydney06:51 → 07:5412:180 min12:1848 min12 Oct
Suva07:51 → 08:5411:290 min11:2948 min12 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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