Ruling · Holī · 2066

Friday 12 March

Determinatein Chattogram, under the Rashtriya Panchang method. Kept the day after Holikā Dahana, Thu 11 Mar. Clear of every threshold by 591 minutes.

Decide it for

ChattogramDelhiKolkataSingaporeSydneyJersey City

22°20′ N 91°50′ E · Asia/Dhaka · GeoNames 1205733

The two late afternoons

One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.

Late afternoon of Thursday 11 March

Taken for Holikā Dahana. The only late afternoon Pūrṇimā reaches. Holī is the day after.

15:37 sāyāhna beginssunset 18:00
15:1315:3716:0116:2516:4917:1317:3718:0118:25

143 of 143 minutes covered

Late afternoon of Friday 12 March

Pūrṇimā is absent from sāyāhna. Not taken.

15:37 sāyāhna beginssunset 18:01
15:1315:3716:0116:2516:4917:1317:3718:0118:25

0 of 143 minutes covered

Pūrṇimā presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 05:47 on Thu 11 Mar to 04:49 on Fri 12 Mar.

    2066-03-10T23:46:39Z → 2066-03-11T22:48:36Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 15:37–18:00 on the 11th, 15:37–18:01 on the 12th.

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

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 143 of 143 minutes on the 11th and 0 of 143 on the 12th.

    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 35442 s

  5. 05

    Counted

    Holī is kept the day after Holikā Dahana: Thursday 11 March is the day taken above.

    follows: holika-dahana + 1 d

  6. 06

    Ruling

    Holī, Chattogram, 2066: Friday 12 March.

    confidence: determinate

Say it like this

In Chattogram, Holī 2066 falls on Friday 12 March. It is kept the day after Holikā Dahana, which falls on Thursday 11 March. Pūrṇimā runs from 05:47 on Thu 11 Mar to 04:49 on Fri 12 Mar and covers all of sāyāhna on the 11th.

ahargana.org/chattogram/festivals/2066/holi · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingFri 12 Mar
Ahargaṇa, classicalDisc centre, no refractionFri 12 Mar
compat-drikpanchangComparison profileFri 12 Mar
No institution has a recorded ruling for Chattogram.

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

The rule, as data

/rules/holi · ruleset 2026.3-draft

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.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāSāyāhna 10thCoveredSāyāhna 11thCoveredRuled
Los Angeles15:47 → 14:4915:36130 min15:360 min11 Mar
Chicago17:47 → 16:4915:315 min15:3277 min12 Mar
Jersey City18:47 → 17:4915:370 min15:38131 min12 Mar
Port of Spain19:47 → 18:4915:530 min15:52144 min12 Mar
London23:47 → 22:4915:390 min15:39139 min12 Mar
Durban01:47 → 00:4915:490 min15:49149 min12 Mar
Dubai03:47 → 02:4916:030 min16:03143 min12 Mar
Delhi05:17 → 04:1916:050 min16:05142 min12 Mar
Kolkata05:17 → 04:1915:210 min15:21143 min12 Mar
Singapore07:47 → 06:4916:530 min16:52145 min12 Mar
Sydney10:47 → 09:4916:500 min16:49149 min12 Mar
Suva11:47 → 10:4915:580 min15:57147 min12 Mar
Profile · tradition
pac-rp@2026.1 · smarta
Rule
holi@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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