Monday 15 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 18:06 on Mon 15 Sep to 19:14 on Tue 16 Sep.

   2014-09-15T13:35:34Z → 2014-09-16T14:44:09Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 19:12–20:45 on the 15th, 19:10–20:43 on the 16th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 93 of 93 minutes on the 15th and 4 of 93 on the 16th.

   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 235 s < 300 s

5. 05

   Ruling

   Jitāṣṭamī, Tehran, 2014: Monday 15 September.

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

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 2014 falls on Monday 15 September. Aṣṭamī runs from 18:06 on Mon 15 Sep to 19:14 on Tue 16 Sep and covers all of pradoṣa that evening. It also reaches the next evening for 4 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 55 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.