Evening of Sunday 1 December
Qualifies with 89 of 115 minutes. Not taken.
16:56 sunsetpradoṣa ends 18:51
Pūrṇimā begins 17:21:50
16:3216:5617:2017:4418:0818:3218:5619:20
89 of 115 minutes covered, the last 89
Ruling · Dattātreyotpatti (Datta Jayanti) · 2047
Boundaryin Baoding, under the Rashtriya Panchang method. Both evenings qualify and the rule does not say which to take. Say “contested”.
One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.
Evening of Sunday 1 December
Qualifies with 89 of 115 minutes. Not taken.
89 of 115 minutes covered, the last 89
Evening of Monday 2 December
Taken. Both evenings qualify; the rule is silent, and this one is covered longer.
115 of 115 minutes covered
Aṅga
Pūrṇimā runs from 17:22 on Sun 1 Dec to 19:55 on Mon 2 Dec.
2047-12-01T09:21:50Z → 2047-12-02T11:55:11Z
Kāla
Pradoṣa is 2 muhūrtas after sunset: 16:56–18:51 on the 1st, 16:56–18:51 on the 2nd.
pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′
Rule
Pūrṇimā must be present during pradoṣa. It covers 89 of 115 minutes on the 1st and 115 of 115 on the 2nd.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.
priority: unstated → greater-coverage · margin 1527 s
Ruling
Dattātreyotpatti, Baoding, 2047: Monday 2 December.
confidence: boundary (tie-break-unstated)
In Baoding, Dattātreyotpatti (Datta Jayanti) 2047 falls on Monday 2 December. Pūrṇimā runs from 17:22 on Sun 1 Dec to 19:55 on Mon 2 Dec and covers all of pradoṣa that evening. It also reaches the previous evening for 89 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Mon 2 Dec |
| Ahargaṇa, classical | Disc centre, no refraction | Mon 2 Dec |
| compat-drikpanchang | Comparison profile | Mon 2 Dec |
| No institution has a recorded ruling for Baoding. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/dattatreyotpatti · ruleset 2026.3-draft
“S 15 Dattatreyotpatti (pradosa).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.
Twelve places, west to east. Local clock times.
| Place | Pūrṇimā | Sunset 1st | Covered | Sunset 2nd | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 01:22 → 03:55 | 16:43 | 112 min | 16:43 | 0 min | 1 Dec |
| Chicago | 03:22 → 05:55 | 16:20 | 117 min | 16:20 | 0 min | 1 Dec |
| Jersey City | 04:22 → 06:55 | 16:29 | 116 min | 16:29 | 0 min | 1 Dec |
| Port of Spain | 05:22 → 07:55 | 17:41 | 100 min | 17:42 | 0 min | 1 Dec |
| London | 09:22 → 11:55 | 15:55 | 127 min | 15:54 | 0 min | 1 Dec |
| Durban | 11:22 → 13:55 | 18:42 | 81 min | 18:43 | 0 min | 1 Dec |
| Dubai | 13:22 → 15:55 | 17:28 | 107 min | 17:28 | 0 min | 1 Dec |
| Delhi | 14:52 → 17:25 | 17:23 | 108 min | 17:23 | 2 min | 1 Dec |
| Kolkata | 14:52 → 17:25 | 16:51 | 105 min | 16:51 | 34 min | 1 Dec |
| Singapore | 17:22 → 19:55 | 18:55 | 96 min | 18:55 | 60 min | 1 Dec |
| Sydney | 20:22 → 22:55 | 19:51 | 47 min | 19:52 | 78 min | 2 Dec |
| Suva | 21:22 → 23:55 | 18:29 | 0 min | 18:29 | 87 min | 2 Dec |