Midday of Thursday 17 July
Qualifies with 48 of 48 minutes. Not taken.
madhyāhna begins 11:27 12:15 madhyāhna ends
Pūrṇimā begins 11:08:00
10:3911:0311:2711:5112:1512:3913:03
48 of 48 minutes covered
Ruling · Guru Pūrṇimā · 1913
Determinatein Chattogram, under the Rashtriya Panchang method. Clear of every threshold by 17 minutes.
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 17 July
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Midday of Friday 18 July
Taken. Both middays qualify; the rule takes the second.
31 of 48 minutes covered, the first 31
Aṅga
Pūrṇimā runs from 11:08 on Thu 17 Jul to 11:59 on Fri 18 Jul.
1913-07-17T05:14:40Z → 1913-07-18T06:05:58Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:27–12:15 on the 17th, 11:28–12:16 on the 18th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 31 of 48 on the 18th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102
Tie-break
Both middays qualify. Paraviddhā: the second is taken.
priority: paraviddha → paraviddha · margin 994 s
Ruling
Guru Pūrṇimā, Chattogram, 1913: Friday 18 July.
confidence: determinate
In Chattogram, Guru Pūrṇimā 1913 falls on Friday 18 July. Pūrṇimā runs from 11:08 on Thu 17 Jul to 11:59 on Fri 18 Jul and covers 31 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Fri 18 Jul |
| Ahargaṇa, classical | Disc centre, no refraction | Fri 18 Jul |
| compat-drikpanchang | Comparison profile | Fri 18 Jul |
| No institution has a recorded ruling for Chattogram. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/guru-purnima · ruleset 2026.3-draft
“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.
Twelve places, west to east. Local clock times.
| Place | Pūrṇimā | Madhyāhna 17th | Covered | Madhyāhna 18th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 21:15 → 22:06 | 11:35 | 48 min | 11:35 | 0 min | 17 Jul |
| Chicago | 23:15 → 00:06 | 11:32 | 48 min | 11:32 | 0 min | 17 Jul |
| Jersey City | 00:15 → 01:06 | 11:38 | 48 min | 11:38 | 0 min | 17 Jul |
| Port of Spain | 01:15 → 02:06 | 11:48 | 48 min | 11:48 | 0 min | 17 Jul |
| London | 05:15 → 06:06 | 11:42 | 48 min | 11:42 | 0 min | 17 Jul |
| Durban | 07:15 → 08:06 | 11:38 | 48 min | 11:38 | 0 min | 17 Jul |
| Dubai | 08:56 → 09:47 | 11:42 | 48 min | 11:42 | 0 min | 17 Jul |
| Delhi | 10:45 → 11:36 | 12:03 | 48 min | 12:03 | 0 min | 17 Jul |
| Kolkata | 10:45 → 11:36 | 11:18 | 48 min | 11:18 | 18 min | 18 Jul |
| Singapore | 12:15 → 13:06 | 11:46 | 20 min | 11:47 | 48 min | 18 Jul |
| Sydney | 15:15 → 16:06 | 11:37 | 0 min | 11:37 | 48 min | 18 Jul |
| Suva | 17:10 → 18:01 | 11:43 | 0 min | 11:43 | 48 min | 18 Jul |