Midday of Tuesday 2 October
Navamī is absent from madhyāhna. Not taken.
madhyāhna begins 11:25 12:13 madhyāhna ends
Navamī begins 12:24:15
10:3711:0111:2511:4912:1312:3713:01
0 of 48 minutes covered
Ruling · Mahānavamī · 1900
Boundaryin Tehran, under the Rashtriya Panchang method. A threshold is only 1 min 15 s away. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Tuesday 2 October
Navamī is absent from madhyāhna. Not taken.
0 of 48 minutes covered
Midday of Wednesday 3 October
Taken. Navamī reaches neither midday; the rule takes the second day.
0 of 48 minutes covered
Aṅga
Navamī runs from 12:24 on Tue 2 Oct to 11:23 on Wed 3 Oct.
1900-10-02T08:58:32Z → 1900-10-03T07:57:58Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 2nd, 11:24–12:12 on the 3rd.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 2nd and 0 of 48 on the 3rd.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Neither midday qualifies. The rule takes the second day.
priority: purvaviddha → second-day · margin 75 s < 300 s
Ruling
Mahānavamī, Tehran, 1900: Wednesday 3 October.
confidence: boundary (margin)
In Tehran, Mahānavamī 1900 falls on Wednesday 3 October. Navamī runs from 12:24 on Tue 2 Oct to 11:23 on Wed 3 Oct, and reaches madhyāhna on neither day. It is 1 min 15 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Wed 3 Oct |
| Ahargaṇa, classical | Disc centre, no refraction | Wed 3 Oct |
| compat-drikpanchang | Comparison profile | Tue 2 Oct |
| No institution has a recorded ruling for Tehran. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/mahanavami · ruleset 2026.3-draft
“S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104. The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.
Twelve places, west to east. Local clock times.
| Place | Navamī | Madhyāhna 2nd | Covered | Madhyāhna 3rd | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 00:59 → 23:58 | 11:18 | 48 min | 11:18 | 0 min | 2 Oct |
| Chicago | 02:59 → 01:58 | 11:16 | 48 min | 11:15 | 0 min | 2 Oct |
| Jersey City | 03:59 → 02:58 | 11:21 | 48 min | 11:21 | 0 min | 2 Oct |
| Port of Spain | 04:59 → 03:58 | 11:31 | 48 min | 11:31 | 0 min | 2 Oct |
| London | 08:59 → 07:58 | 11:25 | 48 min | 11:25 | 0 min | 2 Oct |
| Durban | 10:29 → 09:28 | 10:52 | 48 min | 10:51 | 0 min | 2 Oct |
| Dubai | 12:40 → 11:39 | 11:25 | 0 min | 11:25 | 14 min | 3 Oct |
| Delhi | 14:20 → 13:19 | 11:37 | 0 min | 11:37 | 48 min | 3 Oct |
| Kolkata | 14:20 → 13:19 | 10:53 | 0 min | 10:53 | 48 min | 3 Oct |
| Singapore | 15:54 → 14:53 | 11:25 | 0 min | 11:25 | 48 min | 3 Oct |
| Sydney | 18:59 → 17:58 | 11:21 | 0 min | 11:21 | 48 min | 3 Oct |
| Suva | 20:54 → 19:53 | 11:27 | 0 min | 11:27 | 48 min | 3 Oct |