The bank holidays of Northern Ireland, as GOV.UK lists them. Weekends are left open: the calendar that uses this one closes its own. No offset: Northern Ireland has daylight saving time, so this calendar gives dates only
bank_holidays = data/bank-holidays.json (sha256:538b3482c28b85ec, a copy of https://www.gov.uk/bank-holidays.json, covers listed years = 2019-01-01..2028-12-31)
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Closed days
These days are closed.
the days the table bank_holidays lists closed bank_holidays
Sources and the days the calendar knows
bank_holidays: 103 rows, a copy of https://www.gov.uk/bank-holidays.json, pinned at sha256:538b3482c28b85ec; it lists every closed day from 2019-01-01 to 2028-12-31 (from the first year with a row to the last).
The calendar knows 2019-01-01..2028-12-31. A computation that asks whether a day outside it is a business day stops, in the check and in the generated code alike.
Business days
Year
Business days
Closed days
2027
355
10
2028
356
10
The longest run of closed days in 2027-01..2028-12 is 2027-12-27..2027-12-28, 2 days.