Ruling · Kālī Pūjā · 1925

Friday 16 October

Determinatein Riyadh, under the Rashtriya Panchang method. Clear of every threshold by 118 minutes.

Decide it for

24°41′ N 46°43′ E · Asia/Riyadh · GeoNames 108410

The two nights

One ghaṭī is 24 minutes. Niśītha is 1 ghaṭikā either side of midnight.

Night of Friday 16 October

Taken. The only night Amāvasyā reaches.

niśītha begins 23:21  00:09 niśītha ends
22:3322:5723:2123:4500:0900:3300:57

48 of 48 minutes covered

Night of Saturday 17 October

Amāvasyā is absent from niśītha. Not taken.

niśītha begins 23:21  00:09 niśītha ends
22:3322:5723:2123:4500:0900:3300:57

0 of 48 minutes covered

Amāvasyā presentNiśītha, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Amāvasyā runs from 21:23 on Fri 16 Oct to 21:12 on Sat 17 Oct.

    1925-10-16T18:17:09Z → 1925-10-17T18:05:36Z

  2. 02

    Kāla

    Niśītha is 1 ghaṭikā either side of midnight: 23:21–00:09 on the 16th, 23:21–00:09 on the 17th.

    nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 16th and 0 of 48 on the 17th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one night qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 7065 s

  5. 05

    Ruling

    Kālī Pūjā, Riyadh, 1925: Friday 16 October.

    confidence: determinate

Say it like this

In Riyadh, Kālī Pūjā 1925 falls on Friday 16 October. Amāvasyā runs from 21:23 on Fri 16 Oct to 21:12 on Sat 17 Oct and covers all of niśītha that night.

ahargana.org/riyadh/festivals/1925/kali-puja · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 16 Oct
Ahargaṇa, classicalDisc centre, no refractionFri 16 Oct
compat-drikpanchangComparison profileFri 16 Oct
No institution has a recorded ruling for Riyadh.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/kali-puja · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Kṛṣṇa · Amāvasyā
Kāla
Niśītha
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 104

“K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAmāvasyāNiśītha 16thCoveredNiśītha 17thCoveredRuled
Los Angeles10:17 → 10:0623:1548 min23:150 min16 Oct
Chicago12:17 → 12:0623:1248 min23:120 min16 Oct
Jersey City13:17 → 13:0623:1848 min23:180 min16 Oct
Port of Spain14:17 → 14:0623:2848 min23:270 min16 Oct
London18:17 → 18:0623:2348 min23:220 min16 Oct
Durban20:17 → 20:0623:1748 min23:170 min16 Oct
Dubai22:17 → 22:0623:4148 min23:400 min16 Oct
Delhi23:47 → 23:3623:4344 min23:430 min16 Oct
Kolkata23:47 → 23:3622:580 min22:5837 min17 Oct
Singapore01:17 → 01:0623:260 min23:2648 min17 Oct
Sydney04:17 → 04:0623:170 min23:1648 min17 Oct
Suva06:17 → 06:0623:280 min23:2848 min17 Oct
Profile · tradition
pac-rp@2026.1 · smarta
Rule
kali-puja@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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