Tuesday 29 March

How it was decided

1. 01

   Aṅga

   Pūrṇimā runs from 16:53 on Sun 27 Mar to 19:06 on Mon 28 Mar.

   2078-03-27T08:52:51Z → 2078-03-28T11:05:33Z

2. 02

   Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:32–18:02 on the 27th, 15:32–18:03 on the 28th.

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

3. 03

   Rule

   Pūrṇimā must be present during sāyāhna. It covers 69 of 150 minutes on the 27th and 151 of 151 on the 28th.

   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 3731 s

5. 05

   Counted

   Holī is kept the day after Holikā Dahana: Monday 28 March is the day taken above.

   follows: holika-dahana + 1 d

6. 06

   Ruling

   Holī, Daqing, 2078: Tuesday 29 March.

   confidence: boundary (tie-break-unstated)

Say it like this

In Daqing, Holī 2078 falls on Tuesday 29 March. It is kept the day after Holikā Dahana, which falls on Monday 28 March. Pūrṇimā runs from 16:53 on Sun 27 Mar to 19:06 on Mon 28 Mar and covers all of sāyāhna on the 28th. It also reaches the previous late afternoon for 69 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.