Midday of Monday 27 September
Qualifies with 48 of 48 minutes. Not taken.
madhyāhna begins 11:20 12:08 madhyāhna ends
Aṣṭamī begins 11:01:57
10:3210:5611:2011:4412:0812:3212:56
48 of 48 minutes covered
Ruling · Mahāṣṭamī (Durga Ashtami) · 1971
Boundaryin Chattogram, under the Rashtriya Panchang method. A threshold is only 2 min 15 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 Monday 27 September
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Midday of Tuesday 28 September
Taken. Both middays qualify; the rule takes the second.
2 of 48 minutes covered, the first 2
Aṅga
Aṣṭamī runs from 11:02 on Mon 27 Sep to 11:22 on Tue 28 Sep.
1971-09-27T05:01:58Z → 1971-09-28T05:21:41Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:20–12:08 on the 27th, 11:19–12:07 on the 28th.
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 27th and 2 of 48 on the 28th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Both middays qualify. Paraviddhā: the second is taken.
priority: paraviddha → paraviddha · margin 135 s < 300 s
Ruling
Mahāṣṭamī, Chattogram, 1971: Tuesday 28 September.
confidence: boundary (margin)
In Chattogram, Mahāṣṭamī (Durga Ashtami) 1971 falls on Tuesday 28 September. Aṣṭamī runs from 11:02 on Mon 27 Sep to 11:22 on Tue 28 Sep and covers 2 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 2 min 15 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Tue 28 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Tue 28 Sep |
| compat-drikpanchang | Comparison profile | Tue 28 Sep |
| No institution has a recorded ruling for Chattogram. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/mahashtami · ruleset 2026.3-draft
“S 8 Mahastami (paraviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.
Twelve places, west to east. Local clock times.
| Place | Aṣṭamī | Madhyāhna 27th | Covered | Madhyāhna 28th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 22:02 → 22:22 | 12:20 | 48 min | 12:19 | 0 min | 27 Sep |
| Chicago | 00:02 → 00:22 | 12:17 | 48 min | 12:17 | 0 min | 27 Sep |
| Jersey City | 01:02 → 01:22 | 12:23 | 48 min | 12:23 | 0 min | 27 Sep |
| Port of Spain | 01:02 → 01:22 | 11:33 | 48 min | 11:33 | 0 min | 27 Sep |
| London | 06:02 → 06:22 | 12:27 | 48 min | 12:27 | 0 min | 27 Sep |
| Durban | 07:02 → 07:22 | 11:23 | 48 min | 11:23 | 0 min | 27 Sep |
| Dubai | 09:02 → 09:22 | 11:46 | 48 min | 11:45 | 0 min | 27 Sep |
| Delhi | 10:32 → 10:52 | 11:48 | 48 min | 11:48 | 0 min | 27 Sep |
| Kolkata | 10:32 → 10:52 | 11:04 | 48 min | 11:03 | 0 min | 27 Sep |
| Singapore | 12:32 → 12:52 | 12:02 | 18 min | 12:02 | 48 min | 28 Sep |
| Sydney | 15:02 → 15:22 | 11:23 | 0 min | 11:22 | 48 min | 28 Sep |
| Suva | 17:02 → 17:22 | 11:34 | 0 min | 11:33 | 48 min | 28 Sep |