Night of Monday 30 October
Taken. Amāvasyā reaches neither night; this is the day it falls on.
niśītha begins 23:13 00:01 niśītha ends
Amāvasyā begins 00:05:21
22:2522:4923:1323:3700:0100:2500:49
0 of 48 minutes covered
Ruling · Kālī Pūjā · 1978
Boundaryin Riyadh, under the Rashtriya Panchang method. Amāvasyā reaches niśītha on neither day and the rule does not say what then. Say “contested”.
One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.
Night of Monday 30 October
Taken. Amāvasyā reaches neither night; this is the day it falls on.
0 of 48 minutes covered
Night of Tuesday 31 October
Amāvasyā is absent from niśītha. Not taken.
0 of 48 minutes covered
Aṅga
Amāvasyā runs from 00:05 on Tue 31 Oct to 23:07 on Tue 31 Oct.
1978-10-30T21:05:21Z → 1978-10-31T20:06:31Z
Kāla
Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 30th, 23:13–00:01 on the 31st.
nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′
Rule
Amāvasyā must be present during niśītha. It covers 0 of 48 minutes on the 30th and 0 of 48 on the 31st.
Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104
Tie-break
Neither night qualifies. The day the tithi falls on is taken.
priority: unstated → tithi-day · margin 262 s < 300 s
Ruling
Kālī Pūjā, Riyadh, 1978: Monday 30 October.
confidence: boundary (margin, absent-unstated)
In Riyadh, Kālī Pūjā 1978 falls on Monday 30 October. Amāvasyā runs from 00:05 on Tue 31 Oct to 23:07 on Tue 31 Oct, and reaches niśītha on neither day. It is 4 min 22 s from a threshold: treat the date as contested.
| Authority | Kind | Date |
|---|---|---|
| Ahargaṇa, pac-rp | This ruling | Mon 30 Oct |
| Ahargaṇa, classical | Disc centre, no refraction | Mon 30 Oct |
| compat-drikpanchang | Comparison profile | Mon 30 Oct |
| No institution has a recorded ruling for Riyadh. | ||
Institutional rulings are recorded with a source address, and are never edited to agree.
/rules/kali-puja · ruleset 2026.3-draft
“K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.
Twelve places, west to east. Local clock times.
| Place | Amāvasyā | Niśītha 30th | Covered | Niśītha 31st | Covered | Ruled |
|---|---|---|---|---|---|---|
| Los Angeles | 13:05 → 12:07 | 23:13 | 48 min | 23:13 | 0 min | 30 Oct |
| Chicago | 15:05 → 14:07 | 23:11 | 48 min | 23:11 | 0 min | 30 Oct |
| Jersey City | 16:05 → 15:07 | 23:16 | 48 min | 23:16 | 0 min | 30 Oct |
| Port of Spain | 17:05 → 16:07 | 23:26 | 48 min | 23:26 | 0 min | 30 Oct |
| London | 21:05 → 20:07 | 23:21 | 48 min | 23:21 | 0 min | 30 Oct |
| Durban | 23:05 → 22:07 | 23:15 | 48 min | 23:15 | 0 min | 30 Oct |
| Dubai | 01:05 → 00:07 | 23:39 | 0 min | 23:39 | 28 min | 31 Oct |
| Delhi | 02:35 → 01:37 | 23:41 | 0 min | 23:41 | 48 min | 31 Oct |
| Kolkata | 02:35 → 01:37 | 22:56 | 0 min | 22:56 | 48 min | 31 Oct |
| Singapore | 04:35 → 03:37 | 23:54 | 0 min | 23:54 | 48 min | 31 Oct |
| Sydney | 08:05 → 07:07 | 00:15 | 0 min | 00:15 | 48 min | 31 Oct |
| Suva | 09:05 → 08:07 | 23:26 | 0 min | 23:26 | 48 min | 31 Oct |