Midday of Tuesday 9 September
Qualifies with 13 of 48 minutes. Not taken.
madhyāhna begins 11:33 12:21 madhyāhna ends
Aṣṭamī begins 12:08:38
10:4511:0911:3311:5712:2112:4513:09
13 of 48 minutes covered, the last 13
Ruling · Rādhāṣṭamī · 1902
Boundaryin Riyadh, 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 Tuesday 9 September
Qualifies with 13 of 48 minutes. Not taken.
13 of 48 minutes covered, the last 13
Midday of Wednesday 10 September
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Aṅga
Aṣṭamī runs from 12:08 on Tue 9 Sep to 14:35 on Wed 10 Sep.
1902-09-09T09:01:46Z → 1902-09-10T11:28:51Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:33–12:21 on the 9th, 11:32–12:20 on the 10th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Aṣṭamī must be present during madhyāhna. It covers 13 of 48 minutes on the 9th and 48 of 48 on the 10th.
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 765 s
Ruling
Rādhāṣṭamī, Riyadh, 1902: Wednesday 10 September.
confidence: boundary (tie-break-unstated)
In Riyadh, Rādhāṣṭamī 1902 falls on Wednesday 10 September. Aṣṭamī runs from 12:08 on Tue 9 Sep to 14:35 on Wed 10 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 13 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 | Wed 10 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Wed 10 Sep |
| compat-drikpanchang | Comparison profile | Wed 10 Sep |
| No institution has a recorded ruling for Riyadh. | ||
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 9th | Covered | Madhyāhna 10th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 01:02 → 03:29 | 11:26 | 48 min | 11:26 | 0 min | 9 Sep |
| Chicago | 03:02 → 05:29 | 11:24 | 48 min | 11:23 | 0 min | 9 Sep |
| Jersey City | 04:02 → 06:29 | 11:29 | 48 min | 11:29 | 0 min | 9 Sep |
| Port of Spain | 05:02 → 07:29 | 11:39 | 48 min | 11:39 | 0 min | 9 Sep |
| London | 09:02 → 11:29 | 11:34 | 48 min | 11:33 | 0 min | 9 Sep |
| Durban | 10:32 → 12:59 | 11:00 | 48 min | 10:59 | 48 min | 9 Sep |
| Dubai | 12:43 → 15:10 | 11:33 | 0 min | 11:33 | 48 min | 10 Sep |
| Delhi | 14:23 → 16:50 | 11:45 | 0 min | 11:45 | 48 min | 10 Sep |
| Kolkata | 14:23 → 16:50 | 11:01 | 0 min | 11:01 | 48 min | 10 Sep |
| Singapore | 15:57 → 18:24 | 11:33 | 0 min | 11:33 | 48 min | 10 Sep |
| Sydney | 19:02 → 21:29 | 11:29 | 0 min | 11:29 | 48 min | 10 Sep |
| Suva | 20:57 → 23:24 | 11:35 | 0 min | 11:35 | 48 min | 10 Sep |