Moonrise of Friday 18 September
Taken. The only moonrise Ṣaṣṭhī holds at.
21:19 moonrise
20:0720:3120:5521:1921:4322:0722:31
Holds at moonrise
Ruling · Candra Ṣaṣṭhī · 1981
Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 254 minutes.
One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.
Moonrise of Friday 18 September
Taken. The only moonrise Ṣaṣṭhī holds at.
Holds at moonrise
Moonrise of Saturday 19 September
Ṣaṣṭhī does not hold at moonrise. Not taken.
Absent at moonrise
Aṅga
Ṣaṣṭhī runs from 17:04 on Fri 18 Sep to 14:32 on Sat 19 Sep.
1981-09-18T13:34:11Z → 1981-09-19T11:01:43Z
Kāla
Moonrise is at 21:19 on the 18th and 22:04 on the 19th.
moonrise: disc centre, 31′
Rule
Ṣaṣṭhī must be current at moonrise. It is on the 18th and is not on the 19th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Only one moonrise qualifies. No tie-break is needed.
priority: purvaviddha → only-day · margin 15267 s
Ruling
Candra Ṣaṣṭhī, Tehran, 1981: Friday 18 September.
confidence: determinate
In Tehran, Candra Ṣaṣṭhī 1981 falls on Friday 18 September. Ṣaṣṭhī runs from 17:04 on Fri 18 Sep to 14:32 on Sat 19 Sep and is current at moonrise that day.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Fri 18 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Fri 18 Sep |
| compat-drikpanchang | Comparison profile | Fri 18 Sep |
| No institution has a recorded ruling for Tehran. | ||
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 18th | Covered | Moonrise 19th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 06:34 → 04:02 | 22:31 | holds | 23:20 | no | 18 Sep |
| Chicago | 08:34 → 06:02 | 22:09 | holds | 22:54 | no | 18 Sep |
| Jersey City | 09:34 → 07:02 | 22:16 | holds | 23:01 | no | 18 Sep |
| Port of Spain | 09:34 → 07:02 | 22:11 | holds | 23:06 | no | 18 Sep |
| London | 14:34 → 12:02 | 21:44 | holds | 22:22 | no | 18 Sep |
| Durban | 15:34 → 13:02 | 22:39 | holds | 23:45 | no | 18 Sep |
| Dubai | 17:34 → 15:02 | 21:49 | holds | 22:38 | no | 18 Sep |
| Delhi | 19:04 → 16:32 | 21:43 | holds | 22:31 | no | 18 Sep |
| Kolkata | 19:04 → 16:32 | 21:05 | holds | 21:56 | no | 18 Sep |
| Singapore | 21:04 → 18:32 | 22:26 | holds | 23:22 | no | 18 Sep |
| Sydney | 23:34 → 21:02 | 22:23 | no | 23:30 | no | 18 Sep |
| Suva | 01:34 → 23:02 | 22:07 | no | 23:09 | no | 18 Sep |