Monday 26 October

How it was decided

1. 01

   Aṅga

   Amāvasyā runs from 21:20 on Mon 26 Oct to 23:13 on Tue 27 Oct.

   1981-10-26T18:20:22Z → 1981-10-27T20:13:16Z

2. 02

   Kāla

   Niśītha is 1 ghaṭikā either side of midnight: 23:13–00:01 on the 26th, 23:13–00:01 on the 27th.

   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 26th and 0 of 48 on the 27th.

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

4. 04

   Tie-break

   Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 7 s < 300 s

5. 05

   Ruling

   Kālī Pūjā, Riyadh, 1981: Monday 26 October.

   confidence: boundary (margin, tie-break-unstated)

Say it like this

In Riyadh, Kālī Pūjā 1981 falls on Monday 26 October. Amāvasyā runs from 21:20 on Mon 26 Oct to 23:13 on Tue 27 Oct and covers all of niśītha that night. It also reaches the next night for 0 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 0 min 07 s from a threshold: treat the date as contested.

Copy with citation

Who says what

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