Wednesday 9 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 17:56 on Mon 7 Mar to 17:41 on Tue 8 Mar.

   1955-03-07T15:56:20Z → 1955-03-08T15:41:13Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:37–17:57 on the 7th, 15:37–17:58 on the 8th.

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

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 1 of 140 minutes on the 7th and 124 of 141 on the 8th.

   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 59 s < 300 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Tuesday 8 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Cairo, 1955: Wednesday 9 March.

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

Say it like this

In Cairo, Holī 1955 falls on Wednesday 9 March. It is kept the day after Holikā Dahana, which falls on Tuesday 8 March. Pūrṇimā runs from 17:56 on Mon 7 Mar to 17:41 on Tue 8 Mar and covers 124 of 141 minutes of sāyāhna on the 8th. It also reaches the previous late afternoon for 1 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 0 min 59 s from a threshold: 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.