Sunday 19 September

How it was decided

1. 01

   Aṅga

   Aṣṭamī runs from 19:10 on Sat 18 Sep to 21:06 on Sun 19 Sep.

   2049-09-18T10:09:43Z → 2049-09-19T12:05:48Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:39–19:12 on the 18th, 17:37–19:11 on the 19th.

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

3. 03

   Rule

   Aṣṭamī must be present during pradoṣa. It covers 3 of 93 minutes on the 18th and 94 of 94 on the 19th.

   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 161 s < 300 s

5. 05

   Ruling

   Jitāṣṭamī, Sapporo, 2049: Sunday 19 September.

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

Say it like this

In Sapporo, Jitāṣṭamī (Jitiya) 2049 falls on Sunday 19 September. Aṣṭamī runs from 19:10 on Sat 18 Sep to 21:06 on Sun 19 Sep and covers all of pradoṣa that evening. It also reaches the previous evening for 3 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 2 min 41 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.