Ruling · Rādhāṣṭamī · 1962

Friday 7 September

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 408 minutes.

Decide it for

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 Thursday 6 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:42  12:30 madhyāhna ends
10:5411:1811:4212:0612:3012:5413:18

0 of 48 minutes covered

Midday of Friday 7 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:41  12:29 madhyāhna ends
10:5311:1711:4112:0512:2912:5313:17

48 of 48 minutes covered

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

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 19:18 on Thu 6 Sep to 20:01 on Fri 7 Sep.

    1962-09-06T18:17:47Z → 1962-09-07T19:00:34Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 6th, 11:41–12:29 on the 7th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 24491 s

  5. 05

    Ruling

    Rādhāṣṭamī, Luanda, 1962: Friday 7 September.

    confidence: determinate

Say it like this

In Luanda, Rādhāṣṭamī 1962 falls on Friday 7 September. Aṣṭamī runs from 19:18 on Thu 6 Sep to 20:01 on Fri 7 Sep and covers all of madhyāhna that midday.

ahargana.org/luanda/festivals/1962/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 7 Sep
Ahargaṇa, classicalDisc centre, no refractionFri 7 Sep
compat-drikpanchangComparison profileFri 7 Sep
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/radhashtami · ruleset 2026.3-draft

Month
Bhādrapada, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 103

“S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 6thCoveredMadhyāhna 7thCoveredRuled
Los Angeles11:18 → 12:0112:2748 min12:270 min6 Sep
Chicago13:18 → 14:0112:250 min12:2448 min7 Sep
Jersey City14:18 → 15:0112:300 min12:3048 min7 Sep
Port of Spain14:18 → 15:0111:400 min11:4048 min7 Sep
London19:18 → 20:0112:340 min12:3448 min7 Sep
Durban20:18 → 21:0111:310 min11:3048 min7 Sep
Dubai22:18 → 23:0111:530 min11:5348 min7 Sep
Delhi23:48 → 00:3111:550 min11:5548 min7 Sep
Kolkata23:48 → 00:3111:110 min11:1148 min7 Sep
Singapore01:48 → 02:3112:090 min12:0948 min7 Sep
Sydney04:18 → 05:0111:300 min11:3048 min7 Sep
Suva06:18 → 07:0111:410 min11:4148 min7 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
radhashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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