Saturday 30 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 02:50 on Fri 29 Mar to 01:37 on Sat 30 Mar.

   1907-03-28T20:56:52Z → 1907-03-29T19:44:20Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:32–17:59 on the 28th, 15:32–17:59 on the 29th.

   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 147 minutes on the 28th and 147 of 147 on the 29th.

   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 27488 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Friday 29 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Chattogram, 1907: Saturday 30 March.

   confidence: determinate

Say it like this

In Chattogram, Holī 1907 falls on Saturday 30 March. It is kept the day after Holikā Dahana, which falls on Friday 29 March. Pūrṇimā runs from 02:50 on Fri 29 Mar to 01:37 on Sat 30 Mar and covers all of sāyāhna on the 29th.

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Who says what

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