Holī

1. १Step 1, Aṅga

   Pūrṇimā runs from 08:32 on Sun 23 Mar to 10:45 on Mon 24 Mar.

   1997-03-23T02:31:34Z → 1997-03-24T04:45:14Z
2. २Step 2, Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 16:25–18:51 on the 23rd, 16:25–18:51 on the 24th.

   sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′
3. ३Step 3, Rule

   Pūrṇimā must be present during sāyāhna. It covers 145 of 145 minutes on the 23rd and 0 of 146 on the 24th.

   Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105
4. ४Step 4, Tie-break

   Only one late afternoon qualifies. No tie-break is needed.

   one day qualifies → only-day · margin 20402 s
5. ५Step 5, Counted

   Holī is kept the day after Holikā Dahana: Sunday 23 March is the day taken above.

   follows: holika-dahana + 1 d
6. ६Step 6, Ruling

   Holī, Colombo, 1997: Monday 24 March.

   confidence: determinate

In Colombo, Holī 1997 falls on Monday 24 March. It is kept the day after Holikā Dahana, which falls on Sunday 23 March. Pūrṇimā runs from 08:32 on Sun 23 Mar to 10:45 on Mon 24 Mar and covers all of sāyāhna on the 23rd.

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

Month

Phālguna, amānta

Pakṣa · aṅga

Śukla · Pūrṇimā

Kāla

Sāyāhna

Priority

Unstated

Tie-break

Longer coverage, as a boundary

Kept

The day after Holikā Dahana

S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana. Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105.