Midday of Tuesday 3 September
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
madhyāhna begins 13:02 13:50 madhyāhna ends
12:1412:3813:0213:2613:5014:1414:38
48 of 48 minutes covered
Ruling · Rādhāṣṭamī · 1946
Boundaryin Datong, 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 3 September
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
48 of 48 minutes covered
Midday of Wednesday 4 September
Qualifies with 4 of 48 minutes. Not taken.
4 of 48 minutes covered, the first 4
Aṅga
Aṣṭamī runs from 10:32 on Tue 3 Sep to 13:06 on Wed 4 Sep.
1946-09-03T01:31:46Z → 1946-09-04T04:06:13Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 13:02–13:50 on the 3rd, 13:02–13:50 on the 4th.
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 3rd and 4 of 48 on the 4th.
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 269 s < 300 s
Ruling
Rādhāṣṭamī, Datong, 1946: Tuesday 3 September.
confidence: boundary (margin, tie-break-unstated)
In Datong, Rādhāṣṭamī 1946 falls on Tuesday 3 September. Aṣṭamī runs from 10:32 on Tue 3 Sep to 13:06 on Wed 4 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 4 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 29 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Tue 3 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Tue 3 Sep |
| compat-drikpanchang | Comparison profile | Tue 3 Sep |
| No institution has a recorded ruling for Datong. | ||
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 3rd | Covered | Madhyāhna 4th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 17:32 → 20:06 | 11:28 | 48 min | 11:28 | 0 min | 3 Sep |
| Chicago | 20:32 → 23:06 | 12:26 | 48 min | 12:25 | 0 min | 3 Sep |
| Jersey City | 21:32 → 00:06 | 12:31 | 48 min | 12:31 | 0 min | 3 Sep |
| Port of Spain | 21:32 → 00:06 | 11:41 | 48 min | 11:41 | 0 min | 3 Sep |
| London | 02:32 → 05:06 | 12:35 | 48 min | 12:35 | 0 min | 3 Sep |
| Durban | 03:32 → 06:06 | 11:32 | 48 min | 11:31 | 0 min | 3 Sep |
| Dubai | 05:32 → 08:06 | 11:54 | 48 min | 11:54 | 0 min | 3 Sep |
| Delhi | 07:02 → 09:36 | 11:56 | 48 min | 11:56 | 0 min | 3 Sep |
| Kolkata | 07:02 → 09:36 | 11:12 | 48 min | 11:12 | 0 min | 3 Sep |
| Singapore | 09:02 → 11:36 | 12:10 | 48 min | 12:10 | 0 min | 3 Sep |
| Sydney | 11:32 → 14:06 | 11:31 | 47 min | 11:31 | 48 min | 4 Sep |
| Suva | 13:32 → 16:06 | 11:42 | 0 min | 11:42 | 48 min | 4 Sep |