Saturday 13 November

How it was decided

1. 01

   Aṅga

   Trayodaśī runs from 18:19 on Fri 12 Nov to 20:49 on Sat 13 Nov.

   2077-11-12T10:19:04Z → 2077-11-13T12:49:03Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:06–18:58 on the 12th, 17:06–18:57 on the 13th.

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

3. 03

   Rule

   Trayodaśī must be present during pradoṣa. It covers 38 of 111 minutes on the 12th and 111 of 111 on the 13th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

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 2306 s

5. 05

   Ruling

   Yama Dīpadāna, Baoding, 2077: Saturday 13 November.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Yama Dīpadāna 2077 falls on Saturday 13 November. Trayodaśī runs from 18:19 on Fri 12 Nov to 20:49 on Sat 13 Nov and covers all of pradoṣa that evening. It also reaches the previous evening for 38 minutes; the rule does not say which to take, and the one covered longer is ruled: 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.