Monday 10 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 15:40 on Mon 10 Sep to 18:05 on Tue 11 Sep.

   1906-09-10T07:40:11Z → 1906-09-11T10:05:05Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 18:04–19:43 on the 10th, 18:05–19:43 on the 11th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 98 of 98 minutes on the 10th and 0 of 98 on the 11th.

   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 5 s < 300 s

5. 05

   Ruling

   Jitāṣṭamī, Perth, 1906: Monday 10 September.

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

Say it like this

In Perth, Jitāṣṭamī (Jitiya) 1906 falls on Monday 10 September. Aṣṭamī runs from 15:40 on Mon 10 Sep to 18:05 on Tue 11 Sep and covers all of pradoṣa that evening. It also reaches the next evening 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 05 s from a threshold: treat the date as contested.

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Who says what

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