Holī

1. १Step 1, Aṅga

   Pūrṇimā runs from 17:57 on Sat 27 Mar to 14:48 on Sun 28 Mar.

   2021-03-27T21:57:28Z → 2021-03-28T18:48:11Z
2. २Step 2, Kāla

   Sāyāhna is last 3 of 15 day muhūrtas: 15:37–18:02 on the 27th, 15:36–18:02 on the 28th.

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

   Pūrṇimā must be present during sāyāhna. It covers 5 of 146 minutes on the 27th and 0 of 146 on the 28th.

   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 294 s < 300 s
5. ५Step 5, Counted

   Holī is kept the day after Holikā Dahana: Saturday 27 March is the day taken above.

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

   Holī, Georgetown, 2021: Sunday 28 March.

   confidence: boundary (margin)

In Georgetown, Holī 2021 falls on Sunday 28 March. It is kept the day after Holikā Dahana, which falls on Saturday 27 March. Pūrṇimā runs from 17:57 on Sat 27 Mar to 14:48 on Sun 28 Mar and covers 5 of 146 minutes of sāyāhna on the 27th. It is 4 min 54 s from a threshold. The rule does not settle this date cleanly.

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.