Monday 16 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 18:13 on Mon 16 Sep to 17:40 on Tue 17 Sep.

   1957-09-16T16:12:55Z → 1957-09-17T15:39:35Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:38–19:11 on the 16th, 17:36–19:09 on the 17th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 58 of 93 minutes on the 16th and 3 of 93 on the 17th.

   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 207 s < 300 s

5. 05

   Ruling

   Jitāṣṭamī, Aleppo, 1957: Monday 16 September.

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

Say it like this

In Aleppo, Jitāṣṭamī (Jitiya) 1957 falls on Monday 16 September. Aṣṭamī runs from 18:13 on Mon 16 Sep to 17:40 on Tue 17 Sep and covers 58 of 93 minutes of pradoṣa that evening. It also reaches the next evening for 3 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 27 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.