Sunday 18 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 19:29 on Sat 17 Sep to 18:29 on Sun 18 Sep.

   1927-09-17T16:04:29Z → 1927-09-18T15:03:58Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 18:05–19:38 on the 17th, 18:04–19:37 on the 18th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 9 of 93 minutes on the 17th and 25 of 93 on the 18th.

   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 523 s

5. 05

   Ruling

   Jitāṣṭamī, Tehran, 1927: Sunday 18 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 1927 falls on Sunday 18 September. Aṣṭamī runs from 19:29 on Sat 17 Sep to 18:29 on Sun 18 Sep and covers 25 of 93 minutes of pradoṣa that evening. It also reaches the previous evening for 9 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.