Midday of Thursday 12 September
Taken. The only midday Aṣṭamī reaches.
madhyāhna begins 11:25 12:13 madhyāhna ends
Aṣṭamī begins 12:07:51
10:3711:0111:2511:4912:1312:3713:01
5 of 48 minutes covered, the last 5
Ruling · Rādhāṣṭamī · 2013
Boundaryin Chattogram, under the Rashtriya Panchang method. A threshold is only 4 min 57 s away. Say “contested”.
Decide it for
22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Thursday 12 September
Taken. The only midday Aṣṭamī reaches.
5 of 48 minutes covered, the last 5
Midday of Friday 13 September
Aṣṭamī is absent from madhyāhna. Not taken.
0 of 48 minutes covered
Aṅga
Aṣṭamī runs from 12:08 on Thu 12 Sep to 10:05 on Fri 13 Sep.
2013-09-12T06:07:51Z → 2013-09-13T04:04:52Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 12th, 11:24–12:12 on the 13th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Aṣṭamī must be present during madhyāhna. It covers 5 of 48 minutes on the 12th and 0 of 48 on the 13th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Only one midday qualifies. No tie-break is needed.
priority: unstated → only-day · margin 297 s < 300 s
Ruling
Rādhāṣṭamī, Chattogram, 2013: Thursday 12 September.
confidence: boundary (margin)
In Chattogram, Rādhāṣṭamī 2013 falls on Thursday 12 September. Aṣṭamī runs from 12:08 on Thu 12 Sep to 10:05 on Fri 13 Sep and covers 5 of 48 minutes of madhyāhna that midday. It is 4 min 57 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Thu 12 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Thu 12 Sep |
| compat-drikpanchang | Comparison profile | Thu 12 Sep |
| No institution has a recorded ruling for Chattogram. | ||
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 12th | Covered | Madhyāhna 13th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 23:08 → 21:05 | 12:25 | 48 min | 12:24 | 0 min | 12 Sep |
| Chicago | 01:08 → 23:05 | 12:22 | 48 min | 12:22 | 0 min | 12 Sep |
| Jersey City | 02:08 → 00:05 | 12:28 | 48 min | 12:28 | 0 min | 12 Sep |
| Port of Spain | 02:08 → 00:05 | 11:38 | 48 min | 11:38 | 0 min | 12 Sep |
| London | 07:08 → 05:05 | 12:32 | 48 min | 12:32 | 0 min | 12 Sep |
| Durban | 08:08 → 06:05 | 11:28 | 48 min | 11:28 | 0 min | 12 Sep |
| Dubai | 10:08 → 08:05 | 11:51 | 48 min | 11:50 | 0 min | 12 Sep |
| Delhi | 11:38 → 09:35 | 11:53 | 48 min | 11:53 | 0 min | 12 Sep |
| Kolkata | 11:38 → 09:35 | 11:09 | 19 min | 11:08 | 0 min | 12 Sep |
| Singapore | 14:08 → 12:05 | 12:37 | 0 min | 12:37 | 0 min | 13 Sep |
| Sydney | 16:08 → 14:05 | 11:28 | 0 min | 11:27 | 48 min | 13 Sep |
| Suva | 18:08 → 16:05 | 11:39 | 0 min | 11:38 | 48 min | 13 Sep |