Tuesday 24 October

How it was decided

1. 01

   Aṅga

   Pratipadā runs from 10:11 on Mon 23 Oct to 06:54 on Tue 24 Oct.

   2090-10-23T02:11:06Z → 2090-10-23T22:53:37Z

2. 02

   Kāla

   Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:36–10:14 on the 23rd, 06:37–10:14 on the 24th.

   purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Pratipadā must be present during pūrvāhṇa. It covers 3 of 217 minutes on the 23rd and 16 of 217 on the 24th.

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

4. 04

   Tie-break

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

   priority: unstated → greater-coverage · margin 158 s < 300 s

5. 05

   Ruling

   Dyūta Pratipad, Baoding, 2090: Tuesday 24 October.

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

Say it like this

In Baoding, Dyūta Pratipad 2090 falls on Tuesday 24 October. Pratipadā runs from 10:11 on Mon 23 Oct to 06:54 on Tue 24 Oct and covers 16 of 217 minutes of pūrvāhṇa that forenoon. It also reaches the previous forenoon 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 38 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.