Midday of Monday 20 October
Taken. Both middays qualify; the rule takes the first.
madhyāhna begins 11:25 12:13 madhyāhna ends
10:3711:0111:2511:4912:1312:3713:01
48 of 48 minutes covered
Ruling · Mahānavamī · 2053
Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 9 min 49 s.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Monday 20 October
Taken. Both middays qualify; the rule takes the first.
48 of 48 minutes covered
Midday of Tuesday 21 October
Qualifies with 38 of 48 minutes. Not taken.
38 of 48 minutes covered, the first 38
Aṅga
Navamī runs from 09:40 on Mon 20 Oct to 12:03 on Tue 21 Oct.
2053-10-20T06:10:08Z → 2053-10-21T08:32:53Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:25–12:13 on the 20th, 11:25–12:13 on the 21st.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 38 of 48 on the 21st.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Both middays qualify. Pūrvaviddhā: the first is taken.
priority: purvaviddha → purvaviddha · margin 589 s
Ruling
Mahānavamī, Tehran, 2053: Monday 20 October.
confidence: determinate
In Tehran, Mahānavamī 2053 falls on Monday 20 October. Navamī runs from 09:40 on Mon 20 Oct to 12:03 on Tue 21 Oct and covers all of madhyāhna that midday. It also reaches the next midday for 38 minutes; by the rule the first midday is taken.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Mon 20 Oct |
| Ahargaṇa, classical | Disc centre, no refraction | Mon 20 Oct |
| compat-drikpanchang | Comparison profile | Mon 20 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 20th | Covered | Madhyāhna 21st | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 23:10 → 01:33 | 12:13 | 48 min | 12:13 | 0 min | 20 Oct |
| Chicago | 01:10 → 03:33 | 12:11 | 48 min | 12:11 | 0 min | 20 Oct |
| Jersey City | 02:10 → 04:33 | 12:17 | 48 min | 12:17 | 0 min | 20 Oct |
| Port of Spain | 02:10 → 04:33 | 11:27 | 48 min | 11:27 | 0 min | 20 Oct |
| London | 07:10 → 09:33 | 12:21 | 48 min | 12:21 | 0 min | 20 Oct |
| Durban | 08:10 → 10:33 | 11:17 | 48 min | 11:17 | 0 min | 20 Oct |
| Dubai | 10:10 → 12:33 | 11:39 | 48 min | 11:39 | 48 min | 20 Oct |
| Delhi | 11:40 → 14:03 | 11:42 | 48 min | 11:42 | 48 min | 20 Oct |
| Kolkata | 11:40 → 14:03 | 10:57 | 5 min | 10:57 | 48 min | 20 Oct |
| Singapore | 14:10 → 16:33 | 12:25 | 0 min | 12:25 | 48 min | 21 Oct |
| Sydney | 17:10 → 19:33 | 12:16 | 0 min | 12:16 | 48 min | 21 Oct |
| Suva | 18:10 → 20:33 | 11:27 | 0 min | 11:27 | 48 min | 21 Oct |