Friday 26 October

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 11:05 on Fri 26 Oct to 12:37 on Sat 27 Oct.

   1990-10-26T07:35:14Z → 1990-10-27T09:07:07Z

2. 02

   Kāla

   Madhyāhna is 1 ghaṭikā either side of midday: 11:24–12:12 on the 26th, 11:24–12:12 on the 27th.

   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 26th and 48 of 48 on the 27th.

   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 1133 s

5. 05

   Ruling

   Gopāṣṭamī, Tehran, 1990: Friday 26 October.

   confidence: boundary (tie-break-unstated)

Say it like this

In Tehran, Gopāṣṭamī 1990 falls on Friday 26 October. Aṣṭamī runs from 11:05 on Fri 26 Oct to 12:37 on Sat 27 Oct and covers all of madhyāhna that midday. It also reaches the next midday for 48 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.