Night of Monday 17 November
Pūrṇimā is absent from niśītha. Not taken.
niśītha begins 23:14 00:02 niśītha ends
Pūrṇimā begins 00:04:38
22:2622:5023:1423:3800:0200:2600:50
0 of 48 minutes covered
Ruling · Rāsayātrā · 1975
Boundaryin Riyadh, under the Rashtriya Panchang method. A threshold is only 2 min 25 s away. Say “contested”.
One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.
Night of Monday 17 November
Pūrṇimā is absent from niśītha. Not taken.
0 of 48 minutes covered
Night of Tuesday 18 November
Taken. The only night Pūrṇimā reaches.
48 of 48 minutes covered
Aṅga
Pūrṇimā runs from 00:05 on Tue 18 Nov to 01:28 on Wed 19 Nov.
1975-11-17T21:04:39Z → 1975-11-18T22:28:15Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 23:14–00:02 on the 17th, 23:14–00:02 on the 18th.
nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Pūrṇimā must be present during niśītha. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Only one night qualifies. No tie-break is needed.
priority: paraviddha → only-day · margin 145 s < 300 s
Ruling
Rāsayātrā, Riyadh, 1975: Tuesday 18 November.
confidence: boundary (margin)
In Riyadh, Rāsayātrā 1975 falls on Tuesday 18 November. Pūrṇimā runs from 00:05 on Tue 18 Nov to 01:28 on Wed 19 Nov and covers all of niśītha that night. It is 2 min 25 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Tue 18 Nov |
| Ahargaṇa, classical | Disc centre, no refraction | Tue 18 Nov |
| compat-drikpanchang | Comparison profile | Tue 18 Nov |
| No institution has a recorded ruling for Riyadh. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/rasayatra · ruleset 2026.3-draft
“S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima.” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.
Twelve places, west to east. Local clock times.
| Place | Pūrṇimā | Niśītha 17th | Covered | Niśītha 18th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 13:05 → 14:28 | 23:14 | 48 min | 23:14 | 0 min | 17 Nov |
| Chicago | 15:05 → 16:28 | 23:12 | 48 min | 23:12 | 0 min | 17 Nov |
| Jersey City | 16:05 → 17:28 | 23:18 | 48 min | 23:18 | 0 min | 17 Nov |
| Port of Spain | 17:05 → 18:28 | 23:27 | 48 min | 23:27 | 0 min | 17 Nov |
| London | 21:05 → 22:28 | 23:22 | 48 min | 23:22 | 0 min | 17 Nov |
| Durban | 23:05 → 00:28 | 23:17 | 48 min | 23:17 | 48 min | 18 Nov |
| Dubai | 01:05 → 02:28 | 23:40 | 0 min | 23:40 | 48 min | 18 Nov |
| Delhi | 02:35 → 03:58 | 23:42 | 0 min | 23:42 | 48 min | 18 Nov |
| Kolkata | 02:35 → 03:58 | 22:58 | 0 min | 22:58 | 48 min | 18 Nov |
| Singapore | 04:35 → 05:58 | 23:56 | 0 min | 23:56 | 48 min | 18 Nov |
| Sydney | 08:05 → 09:28 | 00:16 | 0 min | 00:16 | 48 min | 18 Nov |
| Suva | 09:05 → 10:28 | 23:27 | 0 min | 23:27 | 48 min | 18 Nov |