Tuesday 17 August

How it was decided

1. 01

   Aṅga

   Caturdaśī runs from 19:31 on Mon 16 Aug to 20:44 on Tue 17 Aug.

   2077-08-16T11:30:49Z → 2077-08-17T12:44:15Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 19:11–20:34 on the 16th, 19:10–20:33 on the 17th.

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

3. 03

   Rule

   Caturdaśī must be present during pradoṣa. It covers 63 of 83 minutes on the 16th and 83 of 83 on the 17th.

   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 661 s

5. 05

   Ruling

   Aghora Caturdaśī, Baoding, 2077: Tuesday 17 August.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Aghora Caturdaśī 2077 falls on Tuesday 17 August. Caturdaśī runs from 19:31 on Mon 16 Aug to 20:44 on Tue 17 Aug and covers all of pradoṣa that evening. It also reaches the previous evening for 63 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.