Date Calculator UK 2025
Calculate days between dates, add/subtract days from any date, count working days, and track countdowns. Complete with UK bank holidays for 2024-2025.
Working days exclude weekends and UK bank holidays. Select your region for accurate bank holiday calculations.
UK Bank Holidays 2024-2025
Bank holidays affect working day calculations, legal deadlines, and business operations. Different UK regions have different bank holidays.
| Bank Holiday | 2024 | 2025 |
|---|---|---|
| New Year's Day | Mon 1 Jan | Wed 1 Jan |
| Good Friday | Fri 29 Mar | Fri 18 Apr |
| Easter Monday | Mon 1 Apr | Mon 21 Apr |
| Early May Bank Holiday | Mon 6 May | Mon 5 May |
| Spring Bank Holiday | Mon 27 May | Mon 26 May |
| Summer Bank Holiday | Mon 26 Aug | Mon 25 Aug |
| Christmas Day | Wed 25 Dec | Thu 25 Dec |
| Boxing Day | Thu 26 Dec | Fri 26 Dec |
- Scotland: Adds 2nd January and St Andrew's Day (30 Nov)
- Northern Ireland: Adds St Patrick's Day (17 Mar) and Battle of the Boyne (12 Jul)
Understanding UK Date Calculations
Inclusive vs Exclusive Counting
The difference between inclusive and exclusive counting can be significant. Inclusive counting includes both the start and end dates, so 1st to 3rd January = 3 days. Exclusive counting (business standard) excludes the start date, so the same range = 2 days. UK legal contexts typically use exclusive counting for notice periods.
Employment Notice
If you give notice on Monday 1st, the notice period starts Tuesday 2nd. A 1-week notice ends Sunday 8th.
Contract Terms
"Within 30 days" typically means exclusive counting from the date of the event or document.
Leap Years
Leap years add 29th February, affecting calculations spanning late February/early March. A year is a leap year if divisible by 4, except century years which must be divisible by 400. 2024 and 2028 are leap years; 2025 is not.
UK Tax Year
The UK tax year runs from 6th April to 5th April the following year - an unusual date stemming from the calendar reform of 1752. Key HMRC deadlines include:
- 31st October: Paper self-assessment tax returns
- 31st January: Online self-assessment tax returns
- 5th October: Register for self-assessment
Common UK Date Calculation Scenarios
Employment Notice Periods
UK statutory notice periods based on length of service:
- 1 month to 2 years: 1 week's notice
- 2-12 years: 1 week per year of service
- 12+ years: 12 weeks (maximum statutory)
Contracts often specify longer periods - commonly 1 month for junior roles, 3 months for senior positions.
Tenancy Agreements
For assured shorthold tenancies, landlords typically give 2 months' notice (Section 21). Tenants usually give 1 month's notice. The Renters' Reform Bill may change these requirements.
Legal Court Deadlines
Court deadlines in England and Wales exclude weekends and bank holidays for periods of 5 days or less. For longer periods, if the deadline falls on a weekend or bank holiday, it extends to the next working day.
Date Planning Tips
Build Buffer Time
Add extra days to critical deadlines to account for unexpected delays, especially around bank holidays.
Check Bank Holidays
Always verify upcoming bank holidays when planning projects, deliveries, or important deadlines.
Regional Variations
Scotland, Wales, and Northern Ireland have different bank holidays - check when dealing with these regions.
Document Everything
Keep records of how you calculated specific dates for accountability and future reference.
Frequently Asked Questions
Last updated: January 2025 | Content verified against UK gov.uk bank holiday data and employment legislation