Tuesday 15 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep.

   1987-09-14T10:57:13Z → 1987-09-15T12:39:50Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:55–19:26 on the 14th, 17:53–19:25 on the 15th.

   pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 29 of 91 minutes on the 14th and 91 of 91 on the 15th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103

4. 04

   Tie-break

   Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.

   priority: unstated → greater-coverage · margin 1739 s

5. 05

   Ruling

   Jitāṣṭamī, Daqing, 1987: Tuesday 15 September.

   confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Jitāṣṭamī (Jitiya) 1987 falls on Tuesday 15 September. Aṣṭamī runs from 18:57 on Mon 14 Sep to 20:40 on Tue 15 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 29 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.