Moonrise of Thursday 11 September
Taken. Ṣaṣṭhī reaches neither moonrise; this is the day it falls on.
21:02 moonrise
19:5020:1420:3821:0221:2621:5022:14
Absent at moonrise
Ruling · Candra Ṣaṣṭhī · 2025
Boundaryin Chicago, under the Rashtriya Panchang method. Ṣaṣṭhī reaches moonrise on neither day and the rule does not say what then. Say “contested”.
One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.
Moonrise of Thursday 11 September
Taken. Ṣaṣṭhī reaches neither moonrise; this is the day it falls on.
Absent at moonrise
Moonrise of Friday 12 September
Ṣaṣṭhī does not hold at moonrise. Not taken.
Absent at moonrise
Aṅga
Ṣaṣṭhī runs from 23:29 on Thu 11 Sep to 20:54 on Fri 12 Sep.
2025-09-12T04:29:07Z → 2025-09-13T01:53:44Z
Kāla
Moonrise is at 21:02 on the 11th and 21:41 on the 12th.
moonrise: disc centre, 31′
Rule
Ṣaṣṭhī must be current at moonrise. It is not on the 11th and is not on the 12th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Neither moonrise qualifies. The day the tithi falls on is taken.
priority: purvaviddha → tithi-day · margin 2863 s
Ruling
Candra Ṣaṣṭhī, Chicago, 2025: Thursday 11 September.
confidence: boundary (absent-unstated)
In Chicago, Candra Ṣaṣṭhī 2025 falls on Thursday 11 September. Ṣaṣṭhī runs from 23:29 on Thu 11 Sep to 20:54 on Fri 12 Sep, and is current at moonrise on neither day.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Thu 11 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Thu 11 Sep |
| compat-drikpanchang | Comparison profile | Thu 11 Sep |
| No institution has a recorded ruling for Chicago. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/chandra-shashthi · ruleset 2026.3-draft
“K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103.
Twelve places, west to east. Local clock times.
| Place | Ṣaṣṭhī | Moonrise 12th | Covered | Moonrise 13th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 21:29 → 18:54 | 22:15 | no | 23:08 | no | 11 Sep |
| Chicago | 23:29 → 20:54 | 21:41 | no | 22:30 | no | 11 Sep |
| Jersey City | 00:29 → 21:54 | 21:50 | holds | 22:39 | no | 12 Sep |
| Port of Spain | 00:29 → 21:54 | 22:17 | no | 23:16 | no | 11 Sep |
| London | 05:29 → 02:54 | 20:57 | holds | 21:34 | no | 12 Sep |
| Durban | 06:29 → 03:54 | 23:18 | holds | 00:27 | no | 12 Sep |
| Dubai | 08:29 → 05:54 | 21:41 | holds | 22:34 | no | 12 Sep |
| Delhi | 09:59 → 07:24 | 21:31 | holds | 22:23 | no | 12 Sep |
| Kolkata | 09:59 → 07:24 | 20:59 | holds | 21:53 | no | 12 Sep |
| Singapore | 12:29 → 09:54 | 23:07 | holds | 00:07 | no | 12 Sep |
| Sydney | 14:29 → 11:54 | 23:04 | holds | 00:17 | no | 12 Sep |
| Suva | 16:29 → 13:54 | 22:33 | holds | 23:39 | no | 12 Sep |