Ruling · Mahānavamī · 1900

Tuesday 2 October

Determinatein Bucharest, under the Rashtriya Panchang method. Clear of every threshold by 42 minutes.

Decide it for

BucharestDelhiKolkataSingaporeSydneyJersey City

44°26′ N 26°06′ E · Europe/Bucharest · GeoNames 683506

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Tuesday 2 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:25  12:13 madhyāhna ends
Navamī begins 10:42:55
10:3711:0111:2511:4912:1312:3713:01

48 of 48 minutes covered

Midday of Wednesday 3 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:24  12:12 madhyāhna ends
10:3611:0011:2411:4812:1212:3613:00

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 10:43 on Tue 2 Oct to 09:42 on Wed 3 Oct.

    1900-10-02T08:58:32Z → 1900-10-03T07:57:58Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 2nd, 11:24–12:12 on the 3rd.

    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 2nd and 0 of 48 on the 3rd.

    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 2528 s

  5. 05

    Ruling

    Mahānavamī, Bucharest, 1900: Tuesday 2 October.

    confidence: determinate

Say it like this

In Bucharest, Mahānavamī 1900 falls on Tuesday 2 October. Navamī runs from 10:43 on Tue 2 Oct to 09:42 on Wed 3 Oct and covers all of madhyāhna that midday.

ahargana.org/bucharest/festivals/1900/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 2 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 2 Oct
compat-drikpanchangComparison profileTue 2 Oct
No institution has a recorded ruling for Bucharest.

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 2ndCoveredMadhyāhna 3rdCoveredRuled
Los Angeles00:59 → 23:5811:1848 min11:180 min2 Oct
Chicago02:59 → 01:5811:1648 min11:150 min2 Oct
Jersey City03:59 → 02:5811:2148 min11:210 min2 Oct
Port of Spain04:59 → 03:5811:3148 min11:310 min2 Oct
London08:59 → 07:5811:2548 min11:250 min2 Oct
Durban10:29 → 09:2810:5248 min10:510 min2 Oct
Dubai12:40 → 11:3911:250 min11:2514 min3 Oct
Delhi14:20 → 13:1911:370 min11:3748 min3 Oct
Kolkata14:20 → 13:1910:530 min10:5348 min3 Oct
Singapore15:54 → 14:5311:250 min11:2548 min3 Oct
Sydney18:59 → 17:5811:210 min11:2148 min3 Oct
Suva20:54 → 19:5311:270 min11:2748 min3 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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