Ruling · Mahānavamī · 2039

Tuesday 25 October

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 628 minutes.

Decide it for

LuandaDelhiKolkataSingaporeSydneyJersey City

8°50′ S 13°14′ E · Africa/Luanda · GeoNames 2240449

The two middays

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

Midday of Monday 24 October

Navamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:27  12:15 madhyāhna ends
10:3911:0311:2711:5112:1512:3913:03

0 of 48 minutes covered

Midday of Tuesday 25 October

Taken. The only midday Navamī reaches.

madhyāhna begins 11:27  12:15 madhyāhna ends
10:3911:0311:2711:5112:1512:3913:03

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 00:02 on Tue 25 Oct to 22:43 on Tue 25 Oct.

    2039-10-24T23:02:18Z → 2039-10-25T21:43:03Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 24th, 11:27–12:15 on the 25th.

    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 24th and 48 of 48 on the 25th.

    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 37669 s

  5. 05

    Ruling

    Mahānavamī, Luanda, 2039: Tuesday 25 October.

    confidence: determinate

Say it like this

In Luanda, Mahānavamī 2039 falls on Tuesday 25 October. Navamī runs from 00:02 on Tue 25 Oct to 22:43 on Tue 25 Oct and covers all of madhyāhna that midday.

ahargana.org/luanda/festivals/2039/mahanavami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingTue 25 Oct
Ahargaṇa, classicalDisc centre, no refractionTue 25 Oct
compat-drikpanchangComparison profileTue 25 Oct
No institution has a recorded ruling for Luanda.

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 24thCoveredMadhyāhna 25thCoveredRuled
Los Angeles16:02 → 14:4312:130 min12:1348 min25 Oct
Chicago18:02 → 16:4312:110 min12:1048 min25 Oct
Jersey City19:02 → 17:4312:160 min12:1648 min25 Oct
Port of Spain19:02 → 17:4311:260 min11:2648 min25 Oct
London00:02 → 22:4312:200 min12:2048 min25 Oct
Durban01:02 → 23:4311:160 min11:1648 min25 Oct
Dubai03:02 → 01:4311:390 min11:3948 min25 Oct
Delhi04:32 → 03:1311:410 min11:4148 min25 Oct
Kolkata04:32 → 03:1310:570 min10:5748 min25 Oct
Singapore07:02 → 05:4312:250 min12:2548 min25 Oct
Sydney10:02 → 08:4312:160 min12:1648 min25 Oct
Suva11:02 → 09:4311:270 min11:2748 min25 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

About Ahargaṇa