Irish working days: practical guide

What to prepare

• Identify the exact start and end dates or times and the intended timezone.
• Decide whether the task concerns calendar time, working time or elapsed hours.
• Check holiday, weekend and endpoint-inclusion settings where the calculator offers them.

Understand the inputs

Weekend pattern

Options: Saturday and Sunday; Sunday only; Friday and Saturday; No weekend exclusions.

The calculation method

Each calendar day is classified by the selected weekend and statutory public-holiday dates.

Worked example

Illustrative inputs and their result.

Example inputs

Start date

2026-10-05

End date

2026-12-31

Include start date

Yes

Include end date

Yes

Exclude statutory Irish public holidays

Yes

Weekend pattern

Saturday and Sunday

Calculated example result

Working Days

62

Calendar Days

88

How to interpret the result

Calendar differences and working-day counts answer different questions. A planning date is not proof of a contractual or statutory deadline; check the governing rule for critical dates.

Change the start date or inclusion setting while keeping the other assumptions fixed. For a critical deadline, confirm the result against the governing document or a second calendar.

Common mistakes to avoid

• Do not assume both endpoints are included without reading the method.
• Remember that leap years, daylight saving and local holidays can affect different models differently.
• Do not mix a timezone offset with a geographic timezone's seasonal rules.

Assumptions and sources

Good Friday is not a statutory Irish public holiday. Weekend holidays do not automatically move to Monday. Future years project the current rules; employer-specific closure days are excluded.

Sources and further information

• Workplace Relations Commission public holidays

Related dates & time guides

• Exact date difference: practical guide
• Exact calendar age: practical guide
• Timesheet hours and pay estimate: practical guide
• Time across UTC offsets: practical guide