Midday of Sunday 26 July
Qualifies with 48 of 48 minutes. Not taken.
madhyāhna begins 11:22 12:10 madhyāhna ends
Pūrṇimā begins 11:03:58
10:3410:5811:2211:4612:1012:3412:58
48 of 48 minutes covered
Ruling · Guru Pūrṇimā · 2037
Boundaryin Daqing, under the Rashtriya Panchang method. A threshold is only 4 min 59 s away. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Sunday 26 July
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Midday of Monday 27 July
Taken. Both middays qualify; the rule takes the second.
48 of 48 minutes covered
Aṅga
Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul.
2037-07-26T03:03:58Z → 2037-07-27T04:15:12Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:22–12:10 on the 26th, 11:22–12:10 on the 27th.
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 26th and 48 of 48 on the 27th.
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 299 s < 300 s
Ruling
Guru Pūrṇimā, Daqing, 2037: Monday 27 July.
confidence: boundary (margin)
In Daqing, Guru Pūrṇimā 2037 falls on Monday 27 July. Pūrṇimā runs from 11:04 on Sun 26 Jul to 12:15 on Mon 27 Jul and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken. It is 4 min 59 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Mon 27 Jul |
| Ahargaṇa, classical | Disc centre, no refraction | Mon 27 Jul |
| compat-drikpanchang | Comparison profile | Mon 27 Jul |
| No institution has a recorded ruling for Daqing. | ||
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 26th | Covered | Madhyāhna 27th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 20:04 → 21:15 | 12:35 | 48 min | 12:35 | 0 min | 26 Jul |
| Chicago | 22:04 → 23:15 | 12:33 | 48 min | 12:33 | 0 min | 26 Jul |
| Jersey City | 23:04 → 00:15 | 12:39 | 48 min | 12:39 | 0 min | 26 Jul |
| Port of Spain | 23:04 → 00:15 | 11:49 | 48 min | 11:49 | 0 min | 26 Jul |
| London | 04:04 → 05:15 | 12:43 | 48 min | 12:43 | 0 min | 26 Jul |
| Durban | 05:04 → 06:15 | 11:39 | 48 min | 11:39 | 0 min | 26 Jul |
| Dubai | 07:04 → 08:15 | 12:01 | 48 min | 12:01 | 0 min | 26 Jul |
| Delhi | 08:34 → 09:45 | 12:04 | 48 min | 12:03 | 0 min | 26 Jul |
| Kolkata | 08:34 → 09:45 | 11:19 | 48 min | 11:19 | 0 min | 26 Jul |
| Singapore | 11:04 → 12:15 | 12:47 | 48 min | 12:47 | 0 min | 26 Jul |
| Sydney | 13:04 → 14:15 | 11:38 | 0 min | 11:38 | 48 min | 27 Jul |
| Suva | 15:04 → 16:15 | 11:49 | 0 min | 11:49 | 48 min | 27 Jul |