Friday 31 August

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 12:12 on Thu 30 Aug to 11:55 on Fri 31 Aug.

   1979-08-30T06:11:46Z → 1979-08-31T05:55:05Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:29–12:17 on the 30th, 11:29–12:17 on the 31st.

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

3. 03

   Rule

   Aṣṭamī must be present during madhyāhna. It covers 6 of 48 minutes on the 30th and 26 of 48 on the 31st.

   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 336 s

5. 05

   Ruling

   Rādhāṣṭamī, Chattogram, 1979: Friday 31 August.

   confidence: boundary (tie-break-unstated)

Say it like this

In Chattogram, Rādhāṣṭamī 1979 falls on Friday 31 August. Aṣṭamī runs from 12:12 on Thu 30 Aug to 11:55 on Fri 31 Aug and covers 26 of 48 minutes of madhyāhna that midday. It also reaches the previous midday for 6 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.