Wednesday 6 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 11:34 on Tue 5 Sep to 13:29 on Wed 6 Sep.

   2000-09-05T03:34:16Z → 2000-09-06T05:28:58Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 5th, 11:29–12:17 on the 6th.

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

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 43 of 48 minutes on the 5th and 48 of 48 on the 6th.

   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 289 s < 300 s

5. 05

   Ruling

   Rādhāṣṭamī, Jiading, 2000: Wednesday 6 September.

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

Say it like this

In Jiading, Rādhāṣṭamī 2000 falls on Wednesday 6 September. Aṣṭamī runs from 11:34 on Tue 5 Sep to 13:29 on Wed 6 Sep and covers all of madhyāhna that midday. It also reaches the previous midday for 43 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 4 min 49 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.