Monday 13 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 17:54 on Sat 11 Mar to 17:54 on Sun 12 Mar.

   2017-03-11T14:53:56Z → 2017-03-12T14:53:47Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:37–18:00 on the 11th, 15:38–18:01 on the 12th.

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

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 6 of 143 minutes on the 11th and 136 of 143 on the 12th.

   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 367 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Sunday 12 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Riyadh, 2017: Monday 13 March.

   confidence: boundary (tie-break-unstated)

Say it like this

In Riyadh, Holī 2017 falls on Monday 13 March. It is kept the day after Holikā Dahana, which falls on Sunday 12 March. Pūrṇimā runs from 17:54 on Sat 11 Mar to 17:54 on Sun 12 Mar and covers 136 of 143 minutes of sāyāhna on the 12th. It also reaches the previous late afternoon for 6 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.