Ruling · Dyūta Pratipad · 2000

Saturday 28 October

Boundaryin Luanda, under the Rashtriya Panchang method. Both forenoons qualify and the rule does not say which to take. Say “contested”.

Decide it for

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

The two forenoons

One ghaṭī is 24 minutes. Pūrvāhṇa is first 5 of 15 day muhūrtas.

Forenoon of Friday 27 October

Qualifies with 49 of 248 minutes. Not taken.

05:40 sunrisepūrvāhṇa ends 09:47
Pratipadā begins 08:58:00
05:1606:0406:5207:4008:2809:1610:04

49 of 248 minutes covered, the last 49

Forenoon of Saturday 28 October

Taken. Both forenoons qualify; the rule is silent, and this one is covered longer.

05:39 sunrisepūrvāhṇa ends 09:47
Pratipadā ends 08:42:40
05:1506:0306:5107:3908:2709:1510:03

183 of 248 minutes covered, the first 183

Pratipadā presentPūrvāhṇa, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pratipadā runs from 08:58 on Fri 27 Oct to 08:43 on Sat 28 Oct.

    2000-10-27T07:58:01Z → 2000-10-28T07:42:40Z

  2. 02

    Kāla

    Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:40–09:47 on the 27th, 05:39–09:47 on the 28th.

    purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pratipadā must be present during pūrvāhṇa. It covers 49 of 248 minutes on the 27th and 183 of 248 on the 28th.

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

  4. 04

    Tie-break

    Both forenoons qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

    priority: unstated → greater-coverage · margin 2949 s

  5. 05

    Ruling

    Dyūta Pratipad, Luanda, 2000: Saturday 28 October.

    confidence: boundary (tie-break-unstated)

Say it like this

In Luanda, Dyūta Pratipad 2000 falls on Saturday 28 October. Pratipadā runs from 08:58 on Fri 27 Oct to 08:43 on Sat 28 Oct and covers 183 of 248 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon for 49 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

ahargana.org/luanda/festivals/2000/dyuta-pratipad · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 28 Oct
Ahargaṇa, classicalDisc centre, no refractionSat 28 Oct
compat-drikpanchangComparison profileSat 28 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/dyuta-pratipad · ruleset 2026.3-draft

Month
Kārtika, amānta
Pakṣa · aṅga
Śukla · Pratipadā
Kāla
Pūrvāhṇa
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePratipadāSunrise 27thCoveredSunrise 28thCoveredRuled
Los Angeles00:58 → 00:4307:09218 min07:100 min27 Oct
Chicago02:58 → 02:4307:18211 min07:190 min27 Oct
Jersey City03:58 → 03:4307:22212 min07:230 min27 Oct
Port of Spain03:58 → 03:4305:57236 min05:570 min27 Oct
London08:58 → 08:4307:46127 min07:4855 min27 Oct
Durban09:58 → 09:4305:060 min05:05263 min28 Oct
Dubai11:58 → 11:4306:240 min06:24225 min28 Oct
Delhi13:28 → 13:1306:300 min06:31223 min28 Oct
Kolkata13:28 → 13:1305:390 min05:39227 min28 Oct
Singapore15:58 → 15:4306:460 min06:46241 min28 Oct
Sydney18:58 → 18:4306:000 min05:59267 min28 Oct
Suva19:58 → 19:4305:300 min05:29254 min28 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
dyuta-pratipad@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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