Night of Wednesday 5 September
Qualifies with 48 of 48 minutes. Not taken.
niśītha begins 00:02 00:50 niśītha ends
23:1423:3800:0200:2600:5001:1401:38
48 of 48 minutes covered
Ruling · Janmāṣṭamī · 2091
Determinatein Datong, under the Rashtriya Panchang method. Clear of every threshold by 13 minutes.
One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.
Night of Wednesday 5 September
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Night of Thursday 6 September
Taken. Both nights qualify; the rule takes the second.
35 of 48 minutes covered, the first 35
Aṅga
Aṣṭamī runs from 22:54 on Wed 5 Sep to 00:37 on Fri 7 Sep.
2091-09-05T14:53:36Z → 2091-09-06T16:36:49Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 00:02–00:50 on the 5th, 00:02–00:50 on the 6th.
nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 5th and 35 of 48 on the 6th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103
Tie-break
Both nights qualify. Paraviddhā: the second is taken.
priority: paraviddha → paraviddha · margin 773 s
Ruling
Janmāṣṭamī, Datong, 2091: Thursday 6 September.
confidence: determinate
In Datong, Janmāṣṭamī 2091 falls on Thursday 6 September. Aṣṭamī runs from 22:54 on Wed 5 Sep to 00:37 on Fri 7 Sep and covers 35 of 48 minutes of niśītha that night. It also reaches the previous night for 48 minutes; by the rule the second night is taken.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Thu 6 Sep |
| Ahargaṇa, classical | Disc centre, no refraction | Thu 6 Sep |
| compat-drikpanchang | Comparison profile | Thu 6 Sep |
| No institution has a recorded ruling for Datong. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/janmashtami · ruleset 2026.3-draft
“K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103. The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.
Twelve places, west to east. Local clock times.
| Place | Aṣṭamī | Niśītha 5th | Covered | Niśītha 6th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 07:54 → 09:37 | 00:28 | 48 min | 00:28 | 0 min | 5 Sep |
| Chicago | 09:54 → 11:37 | 00:26 | 48 min | 00:25 | 0 min | 5 Sep |
| Jersey City | 10:54 → 12:37 | 00:31 | 48 min | 00:31 | 0 min | 5 Sep |
| Port of Spain | 10:54 → 12:37 | 23:41 | 48 min | 23:41 | 0 min | 5 Sep |
| London | 15:54 → 17:37 | 00:36 | 48 min | 00:35 | 0 min | 5 Sep |
| Durban | 16:54 → 18:37 | 23:30 | 48 min | 23:30 | 0 min | 5 Sep |
| Dubai | 18:54 → 20:37 | 23:54 | 48 min | 23:53 | 0 min | 5 Sep |
| Delhi | 20:24 → 22:07 | 23:56 | 48 min | 23:56 | 0 min | 5 Sep |
| Kolkata | 20:24 → 22:07 | 23:12 | 48 min | 23:11 | 0 min | 5 Sep |
| Singapore | 22:54 → 00:37 | 00:40 | 48 min | 00:39 | 0 min | 5 Sep |
| Sydney | 00:54 → 02:37 | 23:30 | 0 min | 23:30 | 48 min | 6 Sep |
| Suva | 02:54 → 04:37 | 23:41 | 0 min | 23:41 | 48 min | 6 Sep |