Wednesday 11 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 16:49 on Mon 9 Mar to 17:21 on Tue 10 Mar.

   1925-03-09T13:49:27Z → 1925-03-10T14:20:43Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:45–18:05 on the 9th, 15:46–18:06 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 76 of 140 minutes on the 9th and 95 of 141 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 2728 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Tuesday 10 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Erbil, 1925: Wednesday 11 March.

   confidence: boundary (tie-break-unstated)

Say it like this

In Erbil, Holī 1925 falls on Wednesday 11 March. It is kept the day after Holikā Dahana, which falls on Tuesday 10 March. Pūrṇimā runs from 16:49 on Mon 9 Mar to 17:21 on Tue 10 Mar and covers 95 of 141 minutes of sāyāhna on the 10th. It also reaches the previous late afternoon for 76 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.