Saturday 27 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 03:52 on Fri 26 Mar to 05:05 on Sat 27 Mar.

   1937-03-25T21:59:18Z → 1937-03-26T23:12:11Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:32–17:58 on the 25th, 15:32–17:58 on the 26th.

   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 146 minutes on the 25th and 147 of 147 on the 26th.

   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 35652 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Friday 26 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Chattogram, 1937: Saturday 27 March.

   confidence: determinate

Say it like this

In Chattogram, Holī 1937 falls on Saturday 27 March. It is kept the day after Holikā Dahana, which falls on Friday 26 March. Pūrṇimā runs from 03:52 on Fri 26 Mar to 05:05 on Sat 27 Mar and covers all of sāyāhna on the 26th.

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Who says what

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