Ruling · Mahānavamī · 2010

Saturday 16 October

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 353 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 Friday 15 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

Midday of Saturday 16 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

Navamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Navamī runs from 18:21 on Fri 15 Oct to 20:30 on Sat 16 Oct.

    2010-10-15T10:20:55Z → 2010-10-16T12:30:18Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:40–12:28 on the 15th, 11:40–12:28 on the 16th.

    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 15th and 48 of 48 on the 16th.

    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 21190 s

  5. 05

    Ruling

    Mahānavamī, Baoding, 2010: Saturday 16 October.

    confidence: determinate

Say it like this

In Baoding, Mahānavamī 2010 falls on Saturday 16 October. Navamī runs from 18:21 on Fri 15 Oct to 20:30 on Sat 16 Oct and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/2010/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 16 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 16 Oct
compat-drikpanchangComparison profileSat 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 15thCoveredMadhyāhna 16thCoveredRuled
Los Angeles03:21 → 05:3012:1448 min12:140 min15 Oct
Chicago05:21 → 07:3012:1248 min12:120 min15 Oct
Jersey City06:21 → 08:3012:1848 min12:180 min15 Oct
Port of Spain06:21 → 08:3011:2848 min11:280 min15 Oct
London11:21 → 13:3012:2248 min12:2248 min15 Oct
Durban12:21 → 14:3011:180 min11:1848 min16 Oct
Dubai14:21 → 16:3011:400 min11:4048 min16 Oct
Delhi15:51 → 18:0011:430 min11:4348 min16 Oct
Kolkata15:51 → 18:0010:580 min10:5848 min16 Oct
Singapore18:21 → 20:3012:260 min12:2648 min16 Oct
Sydney21:21 → 23:3012:170 min12:1748 min16 Oct
Suva22:21 → 00:3011:280 min11:2848 min16 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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