Sunday 21 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 17:46 on Sat 20 Sep to 20:13 on Sun 21 Sep.

   1924-09-20T14:20:57Z → 1924-09-21T16:48:10Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 18:00–19:34 on the 20th, 17:58–19:33 on the 21st.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 94 of 94 minutes on the 20th and 95 of 95 on the 21st.

   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 819 s

5. 05

   Ruling

   Jitāṣṭamī, Tehran, 1924: Sunday 21 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Tehran, Jitāṣṭamī (Jitiya) 1924 falls on Sunday 21 September. Aṣṭamī runs from 17:46 on Sat 20 Sep to 20:13 on Sun 21 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 94 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.