Midday of Sunday 15 September
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
madhyāhna begins 11:39 12:27 madhyāhna ends
10:5111:1511:3912:0312:2712:5113:15
48 of 48 minutes covered
Ruling · Rādhāṣṭamī · 1991
Boundaryin Luanda, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Sunday 15 September
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Midday of Monday 16 September
Qualifies with 36 of 48 minutes. Not taken.
36 of 48 minutes covered, the first 36
Aṅga
Aṣṭamī runs from 09:54 on Sun 15 Sep to 12:14 on Mon 16 Sep.
1991-09-15T08:54:10Z → 1991-09-16T11:14:09Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:39–12:27 on the 15th, 11:38–12:26 on the 16th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 36 of 48 on the 16th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.
priority: unstated → greater-coverage · margin 720 s
Ruling
Rādhāṣṭamī, Luanda, 1991: Sunday 15 September.
confidence: boundary (tie-break-unstated)
In Luanda, Rādhāṣṭamī 1991 falls on Sunday 15 September. Aṣṭamī runs from 09:54 on Sun 15 Sep to 12:14 on Mon 16 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 36 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sun 15 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Sun 15 Sep |
| compat-drikpanchang | Comparison profile | Sun 15 Sep |
| No institution has a recorded ruling for Luanda. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/radhashtami · ruleset 2026.3-draft
“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.
Twelve places, west to east. Local clock times.
| Place | Aṣṭamī | Madhyāhna 15th | Covered | Madhyāhna 16th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 01:54 → 04:14 | 12:24 | 48 min | 12:24 | 0 min | 15 Sep |
| Chicago | 03:54 → 06:14 | 12:22 | 48 min | 12:21 | 0 min | 15 Sep |
| Jersey City | 04:54 → 07:14 | 12:27 | 48 min | 12:27 | 0 min | 15 Sep |
| Port of Spain | 04:54 → 07:14 | 11:37 | 48 min | 11:37 | 0 min | 15 Sep |
| London | 09:54 → 12:14 | 12:31 | 48 min | 12:31 | 0 min | 15 Sep |
| Durban | 10:54 → 13:14 | 11:28 | 48 min | 11:27 | 48 min | 15 Sep |
| Dubai | 12:54 → 15:14 | 11:50 | 0 min | 11:50 | 48 min | 16 Sep |
| Delhi | 14:24 → 16:44 | 11:52 | 0 min | 11:52 | 48 min | 16 Sep |
| Kolkata | 14:24 → 16:44 | 11:08 | 0 min | 11:07 | 48 min | 16 Sep |
| Singapore | 16:54 → 19:14 | 12:36 | 0 min | 12:36 | 48 min | 16 Sep |
| Sydney | 18:54 → 21:14 | 11:27 | 0 min | 11:27 | 48 min | 16 Sep |
| Suva | 20:54 → 23:14 | 11:38 | 0 min | 11:38 | 48 min | 16 Sep |