Midday of Saturday 8 April
Taken. Both middays qualify; the rule takes the first.
madhyāhna begins 11:56 12:44 madhyāhna ends
Trayodaśī begins 11:30:24
11:0811:3211:5612:2012:4413:0813:32
48 of 48 minutes covered
Ruling · Anaṅga Trayodaśī · 2017
Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 4 min 00 s away. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Saturday 8 April
Taken. Both middays qualify; the rule takes the first.
48 of 48 minutes covered
Midday of Sunday 9 April
Qualifies with 4 of 48 minutes. Not taken.
4 of 48 minutes covered, the first 4
Aṅga
Trayodaśī runs from 11:30 on Sat 8 Apr to 12:00 on Sun 9 Apr.
2017-04-08T03:30:24Z → 2017-04-09T04:00:05Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 8th, 11:56–12:44 on the 9th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Trayodaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 4 of 48 on the 9th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102
Tie-break
Both middays qualify. Pūrvaviddhā: the first is taken.
priority: purvaviddha → purvaviddha · margin 240 s < 300 s
Ruling
Anaṅga Trayodaśī, Baoding, 2017: Saturday 8 April.
confidence: boundary (margin)
In Baoding, Anaṅga Trayodaśī 2017 falls on Saturday 8 April. Trayodaśī runs from 11:30 on Sat 8 Apr to 12:00 on Sun 9 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 4 minutes; by the rule the first midday is taken. It is 4 min 00 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sat 8 Apr |
| Ahargaṇa, classical | Disc centre, no refraction | Sat 8 Apr |
| compat-drikpanchang | Comparison profile | Sat 8 Apr |
| No institution has a recorded ruling for Baoding. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/ananga-trayodashi · ruleset 2026.3-draft
“S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.
Twelve places, west to east. Local clock times.
| Place | Trayodaśī | Madhyāhna 8th | Covered | Madhyāhna 9th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 20:30 → 21:00 | 12:31 | 48 min | 12:31 | 0 min | 8 Apr |
| Chicago | 22:30 → 23:00 | 12:29 | 48 min | 12:28 | 0 min | 8 Apr |
| Jersey City | 23:30 → 00:00 | 12:34 | 48 min | 12:34 | 0 min | 8 Apr |
| Port of Spain | 23:30 → 00:00 | 11:44 | 48 min | 11:44 | 0 min | 8 Apr |
| London | 04:30 → 05:00 | 12:39 | 48 min | 12:39 | 0 min | 8 Apr |
| Durban | 05:30 → 06:00 | 11:33 | 48 min | 11:33 | 0 min | 8 Apr |
| Dubai | 07:30 → 08:00 | 11:57 | 48 min | 11:57 | 0 min | 8 Apr |
| Delhi | 09:00 → 09:30 | 11:59 | 48 min | 11:59 | 0 min | 8 Apr |
| Kolkata | 09:00 → 09:30 | 11:15 | 48 min | 11:14 | 0 min | 8 Apr |
| Singapore | 11:30 → 12:00 | 12:42 | 48 min | 12:42 | 0 min | 8 Apr |
| Sydney | 13:30 → 14:00 | 11:33 | 0 min | 11:33 | 48 min | 9 Apr |
| Suva | 15:30 → 16:00 | 11:44 | 0 min | 11:44 | 48 min | 9 Apr |