Ruling · Sūrya Ṣaṣṭhī (Chhath) · 2002
Boundaryin Tehran, under the Rashtriya Panchang method. Both middays qualify and the rule does not say which to take. Say “contested”.
One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.
Midday of Saturday 9 November
Taken. Both middays qualify; the rule is silent, and this one is covered longer.
20 of 48 minutes covered, the last 20
Midday of Sunday 10 November
Qualifies with 5 of 48 minutes. Not taken.
5 of 48 minutes covered, the first 5
Aṅga
Ṣaṣṭhī runs from 11:52 on Sat 9 Nov to 11:29 on Sun 10 Nov.
2002-11-09T08:21:40Z → 2002-11-10T07:58:34Z
Kāla
Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 9th, 11:24–12:12 on the 10th.
madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Ṣaṣṭhī must be present during madhyāhna. It covers 20 of 48 minutes on the 9th and 5 of 48 on the 10th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.
priority: unstated → greater-coverage · margin 272 s < 300 s
Ruling
Sūrya Ṣaṣṭhī, Tehran, 2002: Saturday 9 November.
confidence: boundary (margin, tie-break-unstated)
In Tehran, Sūrya Ṣaṣṭhī (Chhath) 2002 falls on Saturday 9 November. Ṣaṣṭhī runs from 11:52 on Sat 9 Nov to 11:29 on Sun 10 Nov and covers 20 of 48 minutes of madhyāhna that midday. It also reaches the next midday for 5 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 32 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sat 9 Nov |
| Ahargaṇa, classical | Disc centre, no refraction | Sat 9 Nov |
| compat-drikpanchang | Comparison profile | Sat 9 Nov |
| No institution has a recorded ruling for Tehran. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/surya-shashthi · ruleset 2026.3-draft
“S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.
Twelve places, west to east. Local clock times.
| Place | Ṣaṣṭhī | Madhyāhna 9th | Covered | Madhyāhna 10th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 00:22 → 23:59 | 11:13 | 48 min | 11:13 | 0 min | 9 Nov |
| Chicago | 02:22 → 01:59 | 11:10 | 48 min | 11:10 | 0 min | 9 Nov |
| Jersey City | 03:22 → 02:59 | 11:16 | 48 min | 11:16 | 0 min | 9 Nov |
| Port of Spain | 04:22 → 03:59 | 11:26 | 48 min | 11:26 | 0 min | 9 Nov |
| London | 08:22 → 07:59 | 11:20 | 48 min | 11:20 | 0 min | 9 Nov |
| Durban | 10:22 → 09:59 | 11:16 | 48 min | 11:16 | 0 min | 9 Nov |
| Dubai | 12:22 → 11:59 | 11:38 | 5 min | 11:39 | 20 min | 10 Nov |
| Delhi | 13:52 → 13:29 | 11:41 | 0 min | 11:41 | 48 min | 10 Nov |
| Kolkata | 13:52 → 13:29 | 10:56 | 0 min | 10:56 | 48 min | 10 Nov |
| Singapore | 16:22 → 15:59 | 12:24 | 0 min | 12:24 | 48 min | 10 Nov |
| Sydney | 19:22 → 18:59 | 12:15 | 0 min | 12:15 | 48 min | 10 Nov |
| Suva | 20:22 → 19:59 | 11:26 | 0 min | 11:26 | 48 min | 10 Nov |