Midday of Thursday 17 October
Taken. The only midday Navamī reaches.
madhyāhna begins 11:26 12:14 madhyāhna ends
Navamī begins 12:12:29
10:3811:0211:2611:5012:1412:3813:02
1 of 48 minutes covered, the last 1
Ruling · Mahānavamī · 2075
Boundaryin Tehran, under the Rashtriya Panchang method. A threshold is only 1 min 07 s away. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Thursday 17 October
Taken. The only midday Navamī reaches.
1 of 48 minutes covered, the last 1
Midday of Friday 18 October
Navamī is absent from madhyāhna. Not taken.
0 of 48 minutes covered
Aṅga
Navamī runs from 12:12 on Thu 17 Oct to 10:15 on Fri 18 Oct.
2075-10-17T08:42:29Z → 2075-10-18T06:45:10Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:26–12:14 on the 17th, 11:25–12:13 on the 18th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Navamī must be present during madhyāhna. It covers 1 of 48 minutes on the 17th and 0 of 48 on the 18th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Only one midday qualifies. No tie-break is needed.
priority: purvaviddha → only-day · margin 67 s < 300 s
Ruling
Mahānavamī, Tehran, 2075: Thursday 17 October.
confidence: boundary (margin)
In Tehran, Mahānavamī 2075 falls on Thursday 17 October. Navamī runs from 12:12 on Thu 17 Oct to 10:15 on Fri 18 Oct and covers 1 of 48 minutes of madhyāhna that midday. It is 1 min 07 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Thu 17 Oct |
| Ahargaṇa, classical | Disc centre, no refraction | Thu 17 Oct |
| compat-drikpanchang | Comparison profile | Thu 17 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 17th | Covered | Madhyāhna 18th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 01:42 → 23:45 | 12:14 | 48 min | 12:14 | 0 min | 17 Oct |
| Chicago | 03:42 → 01:45 | 12:12 | 48 min | 12:12 | 0 min | 17 Oct |
| Jersey City | 04:42 → 02:45 | 12:17 | 48 min | 12:17 | 0 min | 17 Oct |
| Port of Spain | 04:42 → 02:45 | 11:27 | 48 min | 11:27 | 0 min | 17 Oct |
| London | 09:42 → 07:45 | 12:22 | 48 min | 12:21 | 0 min | 17 Oct |
| Durban | 10:42 → 08:45 | 11:18 | 48 min | 11:17 | 0 min | 17 Oct |
| Dubai | 12:42 → 10:45 | 11:40 | 0 min | 11:40 | 0 min | 18 Oct |
| Delhi | 14:12 → 12:15 | 11:42 | 0 min | 11:42 | 33 min | 18 Oct |
| Kolkata | 14:12 → 12:15 | 10:58 | 0 min | 10:58 | 48 min | 18 Oct |
| Singapore | 16:42 → 14:45 | 12:26 | 0 min | 12:26 | 48 min | 18 Oct |
| Sydney | 19:42 → 17:45 | 12:17 | 0 min | 12:17 | 48 min | 18 Oct |
| Suva | 20:42 → 18:45 | 11:28 | 0 min | 11:28 | 48 min | 18 Oct |