Night of Saturday 15 August
Qualifies with 48 of 48 minutes. Not taken.
niśītha begins 23:45 00:33 niśītha ends
Aṣṭamī begins 23:35:26
22:5723:2123:4500:0900:3300:5701:21
48 of 48 minutes covered
Ruling · Janmāṣṭamī · 1987
Determinatein Tehran, under the Rashtriya Panchang method. Clear of every threshold by 7 min 51 s.
One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.
Night of Saturday 15 August
Qualifies with 48 of 48 minutes. Not taken.
48 of 48 minutes covered
Night of Sunday 16 August
Taken. Both nights qualify; the rule takes the second.
40 of 48 minutes covered, the first 40
Aṅga
Aṣṭamī runs from 23:35 on Sat 15 Aug to 00:25 on Mon 17 Aug.
1987-08-15T20:05:26Z → 1987-08-16T20:54:58Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 23:45–00:33 on the 15th, 23:45–00:33 on the 16th.
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 15th and 40 of 48 on the 16th.
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 471 s
Ruling
Janmāṣṭamī, Tehran, 1987: Sunday 16 August.
confidence: determinate
In Tehran, Janmāṣṭamī 1987 falls on Sunday 16 August. Aṣṭamī runs from 23:35 on Sat 15 Aug to 00:25 on Mon 17 Aug and covers 40 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 | Sun 16 Aug |
| Ahargaṇa, classical | Disc centre, no refraction | Sun 16 Aug |
| compat-drikpanchang | Comparison profile | Sun 16 Aug |
| No institution has a recorded ruling for Tehran. | ||
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 15th | Covered | Niśītha 16th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 13:05 → 13:55 | 00:34 | 48 min | 00:33 | 0 min | 15 Aug |
| Chicago | 15:05 → 15:55 | 00:31 | 48 min | 00:31 | 0 min | 15 Aug |
| Jersey City | 16:05 → 16:55 | 00:37 | 48 min | 00:37 | 0 min | 15 Aug |
| Port of Spain | 16:05 → 16:55 | 23:47 | 48 min | 23:46 | 0 min | 15 Aug |
| London | 21:05 → 21:55 | 00:41 | 48 min | 00:41 | 0 min | 15 Aug |
| Durban | 22:05 → 22:55 | 23:36 | 48 min | 23:36 | 0 min | 15 Aug |
| Dubai | 00:05 → 00:55 | 23:59 | 42 min | 23:59 | 48 min | 16 Aug |
| Delhi | 01:35 → 02:25 | 00:02 | 0 min | 00:02 | 48 min | 16 Aug |
| Kolkata | 01:35 → 02:25 | 23:17 | 0 min | 23:17 | 48 min | 16 Aug |
| Singapore | 04:05 → 04:55 | 00:45 | 0 min | 00:45 | 48 min | 16 Aug |
| Sydney | 06:05 → 06:55 | 23:35 | 0 min | 23:35 | 48 min | 16 Aug |
| Suva | 08:05 → 08:55 | 23:47 | 0 min | 23:47 | 48 min | 16 Aug |