Friday 13 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 10:15 on Fri 13 Sep to 12:37 on Sat 14 Sep.

   2097-09-13T01:14:33Z → 2097-09-14T03:36:33Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 13th, 11:57–12:45 on the 14th.

   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 13th and 39 of 48 on the 14th.

   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 516 s

5. 05

   Ruling

   Rādhāṣṭamī, Daegu, 2097: Friday 13 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Daegu, Rādhāṣṭamī 2097 falls on Friday 13 September. Aṣṭamī runs from 10:15 on Fri 13 Sep to 12:37 on Sat 14 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 39 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.