Tuesday 9 November

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 11:43 on Mon 8 Nov to 13:56 on Tue 9 Nov.

   1948-11-08T03:43:15Z → 1948-11-09T05:55:35Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:00–11:48 on the 8th, 11:00–11:48 on the 9th.

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

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 4 of 48 minutes on the 8th and 48 of 48 on the 9th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

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 255 s < 300 s

5. 05

   Ruling

   Gopāṣṭamī, Daqing, 1948: Tuesday 9 November.

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

Say it like this

In Daqing, Gopāṣṭamī 1948 falls on Tuesday 9 November. Aṣṭamī runs from 11:43 on Mon 8 Nov to 13:56 on Tue 9 Nov and covers all of madhyāhna that midday. It also reaches the previous midday for 4 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 15 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.