Ruling · Rādhāṣṭamī · 1968

Saturday 31 August

Determinatein Luanda, under the Rashtriya Panchang method. Clear of every threshold by 16 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 Friday 30 August

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:44  12:32 madhyāhna ends
10:5611:2011:4412:0812:3212:5613:20

0 of 48 minutes covered

Midday of Saturday 31 August

Taken. Aṣṭamī reaches neither midday; the rule takes the second day.

madhyāhna begins 11:43  12:31 madhyāhna ends
Aṣṭamī ends 11:27:04
10:5511:1911:4312:0712:3112:5513:19

0 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 13:41 on Fri 30 Aug to 11:27 on Sat 31 Aug.

    1968-08-30T12:41:09Z → 1968-08-31T10:27:05Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:44–12:32 on the 30th, 11:43–12:31 on the 31st.

    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 30th and 0 of 48 on the 31st.

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

  4. 04

    Tie-break

    Neither midday qualifies. The rule takes the second day.

    priority: unstated → second-day · margin 977 s

  5. 05

    Ruling

    Rādhāṣṭamī, Luanda, 1968: Saturday 31 August.

    confidence: determinate

Say it like this

In Luanda, Rādhāṣṭamī 1968 falls on Saturday 31 August. Aṣṭamī runs from 13:41 on Fri 30 Aug to 11:27 on Sat 31 Aug, and reaches madhyāhna on neither day.

ahargana.org/luanda/festivals/1968/radhashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingSat 31 Aug
Ahargaṇa, classicalDisc centre, no refractionSat 31 Aug
compat-drikpanchangComparison profileSat 31 Aug
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 30thCoveredMadhyāhna 31stCoveredRuled
Los Angeles05:41 → 03:2712:2948 min12:290 min30 Aug
Chicago07:41 → 05:2712:2748 min12:260 min30 Aug
Jersey City08:41 → 06:2712:3248 min12:320 min30 Aug
Port of Spain08:41 → 06:2711:4248 min11:420 min30 Aug
London13:41 → 11:2712:360 min12:360 min31 Aug
Durban14:41 → 12:2711:330 min11:3248 min31 Aug
Dubai16:41 → 14:2711:550 min11:5548 min31 Aug
Delhi18:11 → 15:5711:570 min11:5748 min31 Aug
Kolkata18:11 → 15:5711:130 min11:1348 min31 Aug
Singapore20:11 → 17:5712:110 min12:1148 min31 Aug
Sydney22:41 → 20:2711:320 min11:3248 min31 Aug
Suva00:41 → 22:2711:430 min11:4348 min31 Aug
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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