Wednesday 16 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 16:01 on Mon 14 Mar to 18:37 on Tue 15 Mar.

   2033-03-14T23:01:20Z → 2033-03-16T01:37:27Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 16:12–18:36 on the 14th, 16:13–18:36 on the 15th.

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

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 143 of 143 minutes on the 14th and 144 of 144 on the 15th.

   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 71 s < 300 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Tuesday 15 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Phoenix, 2033: Wednesday 16 March.

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

Say it like this

In Phoenix, Holī 2033 falls on Wednesday 16 March. It is kept the day after Holikā Dahana, which falls on Tuesday 15 March. Pūrṇimā runs from 16:01 on Mon 14 Mar to 18:37 on Tue 15 Mar and covers all of sāyāhna on the 15th. It also reaches the previous late afternoon for 143 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 1 min 11 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.