Tuesday 19 August

How it was decided

1. 01

   Aṅga

   Caturdaśī runs from 18:08 on Mon 18 Aug to 20:45 on Tue 19 Aug.

   1952-08-18T10:08:02Z → 1952-08-19T12:44:46Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 19:09–20:33 on the 18th, 19:08–20:32 on the 19th.

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

3. 03

   Rule

   Caturdaśī must be present during pradoṣa. It covers 83 of 83 minutes on the 18th and 84 of 84 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 791 s

5. 05

   Ruling

   Aghora Caturdaśī, Baoding, 1952: Tuesday 19 August.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Aghora Caturdaśī 1952 falls on Tuesday 19 August. Caturdaśī runs from 18:08 on Mon 18 Aug to 20:45 on Tue 19 Aug and covers all of pradoṣa that evening. It also reaches the previous evening for 83 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.