Friday 28 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 19:06 on Thu 27 Sep to 21:22 on Fri 28 Sep.

   2040-09-27T15:35:37Z → 2040-09-28T17:52:16Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:53–19:30 on the 27th, 17:52–19:29 on the 28th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 24 of 97 minutes on the 27th and 97 of 97 on the 28th.

   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 1444 s

5. 05

   Ruling

   Jitāṣṭamī, Tehran, 2040: Friday 28 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 2040 falls on Friday 28 September. Aṣṭamī runs from 19:06 on Thu 27 Sep to 21:22 on Fri 28 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 24 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.