Evening of Thursday 22 July
Pūrṇimā is absent from pradoṣa. Not taken.
18:42 sunsetpradoṣa ends 20:07
18:1818:4219:0619:3019:5420:1820:42
0 of 85 minutes covered
Ruling · Śiva Śayanotsava · 2021
Determinatein Riyadh, under the Rashtriya Panchang method. Clear of every threshold by 570 minutes.
One ghaṭī is 24 minutes. Pradoṣa is 2 muhūrtas after sunset.
Evening of Thursday 22 July
Pūrṇimā is absent from pradoṣa. Not taken.
0 of 85 minutes covered
Evening of Friday 23 July
Taken. The only evening Pūrṇimā reaches.
85 of 85 minutes covered
Aṅga
Pūrṇimā runs from 08:14 on Fri 23 Jul to 05:37 on Sat 24 Jul.
2021-07-23T05:13:49Z → 2021-07-24T02:36:55Z
Kāla
Pradoṣa is 2 muhūrtas after sunset: 18:42–20:07 on the 22nd, 18:42–20:07 on the 23rd.
pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′
Rule
Pūrṇimā must be present during pradoṣa. It covers 0 of 85 minutes on the 22nd and 85 of 85 on the 23rd.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102
Tie-break
Only one evening qualifies. No tie-break is needed.
priority: unstated → only-day · margin 34223 s
Ruling
Śiva Śayanotsava, Riyadh, 2021: Friday 23 July.
confidence: determinate
In Riyadh, Śiva Śayanotsava 2021 falls on Friday 23 July. Pūrṇimā runs from 08:14 on Fri 23 Jul to 05:37 on Sat 24 Jul and covers all of pradoṣa that evening.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Fri 23 Jul |
| Ahargaṇa, classical | Disc centre, no refraction | Fri 23 Jul |
| compat-drikpanchang | Comparison profile | Fri 23 Jul |
| No institution has a recorded ruling for Riyadh. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/shiva-shayanotsava · ruleset 2026.3-draft
“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.
Twelve places, west to east. Local clock times.
| Place | Pūrṇimā | Sunset 23rd | Covered | Sunset 24th | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 22:14 → 19:37 | 20:00 | 0 min | 19:59 | 0 min | 22 Jul |
| Chicago | 00:14 → 21:37 | 20:17 | 75 min | 20:16 | 0 min | 23 Jul |
| Jersey City | 01:14 → 22:37 | 20:20 | 75 min | 20:19 | 0 min | 23 Jul |
| Port of Spain | 01:14 → 22:37 | 18:32 | 91 min | 18:31 | 0 min | 23 Jul |
| London | 06:14 → 03:37 | 21:01 | 66 min | 21:00 | 0 min | 23 Jul |
| Durban | 07:14 → 04:37 | 17:18 | 108 min | 17:19 | 0 min | 23 Jul |
| Dubai | 09:14 → 06:37 | 19:08 | 85 min | 19:08 | 0 min | 23 Jul |
| Delhi | 10:44 → 08:07 | 19:17 | 83 min | 19:17 | 0 min | 23 Jul |
| Kolkata | 10:44 → 08:07 | 18:21 | 86 min | 18:21 | 0 min | 23 Jul |
| Singapore | 13:14 → 10:37 | 19:16 | 95 min | 19:16 | 0 min | 23 Jul |
| Sydney | 15:14 → 12:37 | 17:09 | 110 min | 17:10 | 0 min | 23 Jul |
| Suva | 17:14 → 14:37 | 17:49 | 102 min | 17:49 | 0 min | 23 Jul |