Thursday 13 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 19:11 on Wed 12 Sep to 19:31 on Thu 13 Sep.

   1979-09-12T18:11:28Z → 1979-09-13T18:30:58Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 18:04–19:40 on the 12th, 18:04–19:40 on the 13th.

   pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 28 of 96 minutes on the 12th and 87 of 96 on the 13th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

4. 04

   Tie-break

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

   priority: unstated → greater-coverage · margin 519 s

5. 05

   Ruling

   Jitāṣṭamī, Luanda, 1979: Thursday 13 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Luanda, Jitāṣṭamī (Jitiya) 1979 falls on Thursday 13 September. Aṣṭamī runs from 19:11 on Wed 12 Sep to 19:31 on Thu 13 Sep and covers 87 of 96 minutes of pradoṣa that evening. It also reaches the previous evening for 28 minutes; the rule does not say which to take, and the one covered longer is ruled: 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.