Ruling · Mahānavamī · 2067

Monday 17 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 37 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 Sunday 16 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:40  12:28 madhyāhna ends
Navamī begins 13:04:23
10:5211:1611:4012:0412:2812:5213:16

0 of 48 minutes covered

Midday of Monday 17 October

Taken. Navamī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:39  12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15

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 13:04 on Sun 16 Oct to 10:51 on Mon 17 Oct.

    2067-10-16T05:04:24Z → 2067-10-17T02:50:46Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 16th, 11:39–12:27 on the 17th.

    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 16th and 0 of 48 on the 17th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: purvaviddha → second-day · margin 2207 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2067: Monday 17 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2067 falls on Monday 17 October. Navamī runs from 13:04 on Sun 16 Oct to 10:51 on Mon 17 Oct, and reaches madhyāhna on neither day.

ahargana.org/baoding/festivals/2067/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 17 Oct
Ahargaṇa, classicalDisc centre, no refractionMon 17 Oct
compat-drikpanchangComparison profileSun 16 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 16thCoveredMadhyāhna 17thCoveredRuled
Los Angeles22:04 → 19:5112:1448 min12:140 min16 Oct
Chicago00:04 → 21:5112:1248 min12:120 min16 Oct
Jersey City01:04 → 22:5112:1848 min12:170 min16 Oct
Port of Spain01:04 → 22:5111:2848 min11:270 min16 Oct
London06:04 → 03:5112:2248 min12:220 min16 Oct
Durban07:04 → 04:5111:1848 min11:180 min16 Oct
Dubai09:04 → 06:5111:4048 min11:400 min16 Oct
Delhi10:34 → 08:2111:4348 min11:420 min16 Oct
Kolkata10:34 → 08:2110:5848 min10:580 min16 Oct
Singapore13:04 → 10:5112:2610 min12:260 min16 Oct
Sydney16:04 → 13:5112:170 min12:1748 min17 Oct
Suva17:04 → 14:5111:280 min11:2848 min17 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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