Wednesday 12 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 12:21 on Tue 11 Sep to 14:13 on Wed 12 Sep.

   1956-09-11T11:21:02Z → 1956-09-12T13:12:52Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 12:20–13:08 on the 11th, 12:20–13:08 on the 12th.

   madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 47 of 48 minutes on the 11th and 48 of 48 on the 12th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

4. 04

   Tie-break

   Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 66 s < 300 s

5. 05

   Ruling

   Rādhāṣṭamī, Algiers, 1956: Wednesday 12 September.

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

Say it like this

In Algiers, Rādhāṣṭamī 1956 falls on Wednesday 12 September. Aṣṭamī runs from 12:21 on Tue 11 Sep to 14:13 on Wed 12 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 47 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 06 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.