Moonrise of Saturday 20 September
Ṣaṣṭhī does not hold at moonrise. Not taken.
21:52 moonrise
20:4021:0421:2821:5222:1622:4023:04
Absent at moonrise
Ruling · Candra Ṣaṣṭhī · 1997
Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 481 minutes.
One ghaṭī is 24 minutes. The moonrise is read as disc centre, 31′.
Moonrise of Saturday 20 September
Ṣaṣṭhī does not hold at moonrise. Not taken.
Absent at moonrise
Moonrise of Sunday 21 September
Taken. The only moonrise Ṣaṣṭhī holds at.
Holds at moonrise
Aṅga
Ṣaṣṭhī runs from 08:01 on Sun 21 Sep to 05:39 on Mon 22 Sep.
1997-09-21T03:30:43Z → 1997-09-22T02:08:58Z
Kāla
Moonrise is at 21:52 on the 20th and 22:38 on the 21st.
moonrise: disc centre, 31′
Rule
Ṣaṣṭhī must be current at moonrise. It is not on the 20th and is on the 21st.
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 28855 s
Ruling
Candra Ṣaṣṭhī, Tehran, 1997: Sunday 21 September.
confidence: determinate
In Tehran, Candra Ṣaṣṭhī 1997 falls on Sunday 21 September. Ṣaṣṭhī runs from 08:01 on Sun 21 Sep to 05:39 on Mon 22 Sep and is current at moonrise that day.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Sun 21 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Sun 21 Sep |
| compat-drikpanchang | Comparison profile | Sun 21 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 21st | Covered | Moonrise 22nd | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 20:31 → 19:09 | 22:52 | no | 23:42 | no | 20 Sep |
| Chicago | 22:31 → 21:09 | 22:30 | no | 23:18 | no | 20 Sep |
| Jersey City | 23:31 → 22:09 | 22:36 | no | 23:25 | no | 20 Sep |
| Port of Spain | 23:31 → 22:09 | 22:33 | no | 23:25 | no | 20 Sep |
| London | 04:31 → 03:09 | 22:02 | holds | 22:47 | no | 21 Sep |
| Durban | 05:31 → 04:09 | 23:04 | holds | 00:01 | no | 21 Sep |
| Dubai | 07:31 → 06:09 | 22:09 | holds | 23:00 | no | 21 Sep |
| Delhi | 09:01 → 07:39 | 22:03 | holds | 22:53 | no | 21 Sep |
| Kolkata | 09:01 → 07:39 | 21:26 | holds | 22:17 | no | 21 Sep |
| Singapore | 11:31 → 10:09 | 23:19 | holds | 00:12 | no | 21 Sep |
| Sydney | 13:31 → 12:09 | 22:50 | holds | 23:49 | no | 21 Sep |
| Suva | 15:31 → 14:09 | 22:33 | holds | 23:29 | no | 21 Sep |