Monday 22 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 11:38 on Sun 21 Sep to 13:52 on Mon 22 Sep.

   1947-09-21T16:37:37Z → 1947-09-22T18:51:40Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:37–12:25 on the 21st, 11:37–12:25 on the 22nd.

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

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 48 of 48 on the 22nd.

   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 11 s < 300 s

5. 05

   Ruling

   Rādhāṣṭamī, Lima, 1947: Monday 22 September.

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

Say it like this

In Lima, Rādhāṣṭamī 1947 falls on Monday 22 September. Aṣṭamī runs from 11:38 on Sun 21 Sep to 13:52 on Mon 22 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 0 min 11 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.