Saturday 23 December

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 16:04 on Sat 23 Dec to 18:23 on Sun 24 Dec.

   1950-12-23T08:03:46Z → 1950-12-24T10:22:55Z

2. 02

   Kāla

   Pradoṣa is 2 muhūrtas after sunset: 17:00–18:56 on the 23rd, 17:00–18:57 on the 24th.

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

3. 03

   Rule

   Pūrṇimā must be present during pradoṣa. It covers 117 of 117 minutes on the 23rd and 83 of 117 on the 24th.

   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 2044 s

5. 05

   Ruling

   Dattātreyotpatti, Baoding, 1950: Saturday 23 December.

   confidence: boundary (tie-break-unstated)

Say it like this

In Baoding, Dattātreyotpatti (Datta Jayanti) 1950 falls on Saturday 23 December. Pūrṇimā runs from 16:04 on Sat 23 Dec to 18:23 on Sun 24 Dec and covers all of pradoṣa that evening. It also reaches the next evening for 83 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.

Copy with citation

Who says what

Institutional rulings are recorded with a source address, and are never edited to agree.