Sunday 10 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 15:09 on Sat 9 Mar to 16:49 on Sun 10 Mar.

   1963-03-09T06:09:02Z → 1963-03-10T07:48:34Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 16:17–18:37 on the 9th, 16:18–18:38 on the 10th.

   sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 139 of 139 minutes on the 9th and 31 of 140 on the 10th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105

4. 04

   Tie-break

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

   priority: unstated → greater-coverage · margin 1854 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Saturday 9 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Pyongyang, 1963: Sunday 10 March.

   confidence: boundary (tie-break-unstated)

Say it like this

In Pyongyang, Holī 1963 falls on Sunday 10 March. It is kept the day after Holikā Dahana, which falls on Saturday 9 March. Pūrṇimā runs from 15:09 on Sat 9 Mar to 16:49 on Sun 10 Mar and covers all of sāyāhna on the 9th. It also reaches the next late afternoon for 31 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.