Tuesday 10 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 00:34 on Mon 9 Mar to 20:48 on Mon 9 Mar.

   2020-03-08T21:34:14Z → 2020-03-09T17:47:45Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:37–17:59 on the 8th, 15:37–17:59 on the 9th.

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

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 0 of 142 minutes on the 8th and 142 of 142 on the 9th.

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

4. 04

   Tie-break

   Only one late afternoon qualifies. No tie-break is needed.

   priority: unstated → only-day · margin 10107 s

5. 05

   Counted

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

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Riyadh, 2020: Tuesday 10 March.

   confidence: determinate

Say it like this

In Riyadh, Holī 2020 falls on Tuesday 10 March. It is kept the day after Holikā Dahana, which falls on Monday 9 March. Pūrṇimā runs from 00:34 on Mon 9 Mar to 20:48 on Mon 9 Mar and covers all of sāyāhna on the 9th.

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Who says what

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