Midday of Wednesday 4 April
Trayodaśī is absent from madhyāhna. Not taken.
madhyāhna begins 11:57 12:45 madhyāhna ends
Trayodaśī begins 12:48:03
11:0911:3311:5712:2112:4513:0913:33
0 of 48 minutes covered
Ruling · Anaṅga Trayodaśī · 2012
Boundaryin Baoding, under the Rashtriya Panchang method. A threshold is only 2 min 37 s away. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Wednesday 4 April
Trayodaśī is absent from madhyāhna. Not taken.
0 of 48 minutes covered
Midday of Thursday 5 April
Taken. Trayodaśī reaches neither midday; the rule takes the second day.
0 of 48 minutes covered
Aṅga
Trayodaśī runs from 12:48 on Wed 4 Apr to 10:04 on Thu 5 Apr.
2012-04-04T04:48:03Z → 2012-04-05T02:04:08Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 4th, 11:57–12:45 on the 5th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 4th and 0 of 48 on the 5th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102
Tie-break
Neither midday qualifies. The rule takes the second day.
priority: purvaviddha → second-day · margin 157 s < 300 s
Ruling
Anaṅga Trayodaśī, Baoding, 2012: Thursday 5 April.
confidence: boundary (margin)
In Baoding, Anaṅga Trayodaśī 2012 falls on Thursday 5 April. Trayodaśī runs from 12:48 on Wed 4 Apr to 10:04 on Thu 5 Apr, and reaches madhyāhna on neither day. It is 2 min 37 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Thu 5 Apr |
| Ahargaṇa, classical | Disc centre, no refraction | Thu 5 Apr |
| compat-drikpanchang | Comparison profile | Wed 4 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 4th | Covered | Madhyāhna 5th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 21:48 → 19:04 | 12:32 | 48 min | 12:32 | 0 min | 4 Apr |
| Chicago | 23:48 → 21:04 | 12:30 | 48 min | 12:29 | 0 min | 4 Apr |
| Jersey City | 00:48 → 22:04 | 12:35 | 48 min | 12:35 | 0 min | 4 Apr |
| Port of Spain | 00:48 → 22:04 | 11:45 | 48 min | 11:45 | 0 min | 4 Apr |
| London | 05:48 → 03:04 | 12:40 | 48 min | 12:40 | 0 min | 4 Apr |
| Durban | 06:48 → 04:04 | 11:35 | 48 min | 11:34 | 0 min | 4 Apr |
| Dubai | 08:48 → 06:04 | 11:58 | 48 min | 11:58 | 0 min | 4 Apr |
| Delhi | 10:18 → 07:34 | 12:00 | 48 min | 12:00 | 0 min | 4 Apr |
| Kolkata | 10:18 → 07:34 | 11:16 | 48 min | 11:15 | 0 min | 4 Apr |
| Singapore | 12:48 → 10:04 | 12:44 | 44 min | 12:43 | 0 min | 4 Apr |
| Sydney | 14:48 → 12:04 | 11:34 | 0 min | 11:34 | 31 min | 5 Apr |
| Suva | 16:48 → 14:04 | 11:45 | 0 min | 11:45 | 48 min | 5 Apr |