UK Time Guides
Clock changes
- When Do the Clocks Change in the UK? Dates for the Next Five Years
The exact dates the UK clocks go forward and back for the next five years, what time they change, and how to remember the rule.
- When Do the Clocks Go Back in 2026?
The UK clocks go back on Sunday 25 October 2026. What changes, what to adjust, and what it means for sunrise and sunset.
- When Do the Clocks Go Forward in 2027?
The UK clocks go forward on Sunday 28 March 2027, starting British Summer Time. Dates, effects and what to adjust.
- When Do the Clocks Go Back in 2027?
The UK clocks go back on Sunday 31 October 2027. Date, time and what changes for sunrise and sunset.
- When Do the Clocks Go Forward in 2028?
The UK clocks go forward on Sunday 26 March 2028. Date, time and what changes.
- UK Clock Change Dates for the Next 10 Years
A full list of UK clock change dates from 2026 to 2035, with the rule used to calculate them.
- What Time Do the Clocks Change in the UK?
The clocks go forward at 1am and back at 2am. Here is the exact time, why it is early on a Sunday, and what happens to devices.
- UK vs Europe vs US Clock Change Dates
The UK and EU change clocks together, but the US changes earlier in spring and later in autumn. See the dates and the effect on time gaps.
- When Do the Clocks Go Back in 2028?
The UK clocks go back on Sunday 29 October 2028, ending British Summer Time. Date, time and what changes.
- When Do the Clocks Go Forward in 2029?
The UK clocks go forward on Sunday 25 March 2029, starting British Summer Time. Date, time and what to expect.
- When Do the Clocks Go Back in 2029?
The UK clocks go back on Sunday 28 October 2029. Date, time and what to prepare.
- When Do the Clocks Go Forward in 2030?
The UK clocks go forward on Sunday 31 March 2030. Date, time and what changes.
- How to Change the Clocks: Phones, Cars, Ovens and More
A practical checklist for what changes automatically when the UK clocks change and what you have to set by hand.
- When Do the Clocks Go Back in 2030?
The UK clocks go back on Sunday 27 October 2030, ending British Summer Time. Date, time and what to plan.
- When Do the Clocks Go Forward in 2031?
The UK clocks go forward on Sunday 30 March 2031. Date, time and what changes.
- When Do the Clocks Go Back in 2031?
The UK clocks go back on Sunday 26 October 2031. Date, time and what changes.
- When Do the Clocks Go Forward in 2032?
The UK clocks go forward on Sunday 28 March 2032. Date, time and what changes.
- Why Do the Clocks Go Back in October? The Real Reason
The clocks go back in autumn to return the UK to GMT, so winter mornings are lighter. The history, the rule, what time it happens and what changes for you.
- When Do the Clocks Go Forward Again After Going Back?
When the UK clocks go forward again after the autumn change, how long the UK stays on GMT, when evenings get lighter and how to remember to reset your clocks.
Explainers
- What Is BST? British Summer Time Explained
BST stands for British Summer Time, UTC+1, in use from the last Sunday of March to the last Sunday of October. Learn what it is and why it exists.
- GMT vs BST: What Is the Difference?
GMT is the UK's winter time (UTC+0) and BST is its summer time (UTC+1). Understand the difference and which one the UK is using.
- Why Do the Clocks Change in the UK?
The clocks change to shift daylight into the evening during the lighter months. Learn the history and the arguments for and against.
- Should the UK Stay on Summer Time All Year? The Debate
The arguments for and against permanent summer time in the UK, including the effect on Scotland and the 1968 to 1971 experiment.
- A Short History of British Summer Time
From William Willett's 1907 proposal to the 1916 Summer Time Act and the double summer time of the Second World War.
- GMT vs UTC: Are They the Same?
GMT and UTC show the same clock time, but GMT is a time zone and UTC is a standard. Learn the difference and when it matters.
- Greenwich Mean Time Explained
How Greenwich became the world's time reference, from the Royal Observatory in 1675 to the 1884 International Meridian Conference.
- The 24-Hour Clock Explained
How the 24-hour clock works, how to convert to and from the 12-hour clock, and where it is used in the UK.
- AM and PM Explained: Is Noon 12 AM or 12 PM?
What am and pm stand for, why noon is 12 pm and midnight is 12 am, and how to avoid confusion.
- Time Zone Abbreviations: BST, IST, EST and Why They Confuse
Many time zone abbreviations are ambiguous. Learn which BST, IST and CST people mean, and what to write in international emails.
- Clock Changes and Sleep: How to Adjust
Why the clock change disturbs sleep and simple ways to ease into it, including gradual bedtime shifts and morning light.
- Clock Changes, Pets and Farm Animals
Animals follow routine, not clocks. How to shift feeding and walking times gently when the UK clocks change.
- What Is UTC? Coordinated Universal Time Explained
UTC is the world's time standard. Learn what it is, why the abbreviation is not UCT, and how UK time relates to it.
- The IANA Time Zone Database: How Computers Know UK Time
How the shared database behind phones and servers handles UK clock changes, and why identifiers like Europe/London name cities, not countries.
- How UK Time Is Kept: Atomic Clocks and the MSF Signal
The role of the National Physical Laboratory, atomic clocks and the radio signal that sets radio-controlled clocks.
- The Pips: The Greenwich Time Signal Explained
What the six pips on BBC radio mean, when they began in 1924 and why digital radio can run seconds late.
- Leap Seconds Explained
Why UTC sometimes gains an extra second, how many have been added and why the practice is due to end.
- UK and Ireland Time: Same Clocks, Different Names
The UK and the Republic of Ireland always show the same time, but name their summer time differently.
- UK Daylight Hours by Month: London, Edinburgh and Belfast
How many hours of daylight London, Edinburgh and Belfast get in each month, from mid-winter to midsummer.
- The Longest and Shortest Day in the UK
How long the longest and shortest days are in London, Edinburgh and Belfast, and when the solstices fall.
- The Time Zones of the UK Overseas Territories
Which clock each British Overseas Territory and Crown Dependency uses, and how far it is from UK time.
- British Double Summer Time: The Wartime Clocks
How the UK ran its clocks two hours ahead of GMT during the Second World War and in the years after.
- Daylight Saving Time Around the World: Who Changes Their Clocks?
Which countries use daylight saving, which have stopped, and why the dates differ between regions.
- How Time Zones Were Created: Railways, Greenwich and 1884
The history of standard time, from local sun time to railway time and the International Meridian Conference.
- What Is Daylight Saving Time (DST)? A Plain-English Guide
What daylight saving time is, how it works in the UK, Europe and the US, why it exists, its history, who uses it and the argument over scrapping it.
- European Time Zones Explained: WET, CET, EET and Moscow Time
Every European time zone explained: WET and GMT, CET, EET, Turkey and Moscow time, who changes their clocks, and how each compares with UK time.
Practical guides
- UK Business and Bank Hours
Typical UK office, bank, shop and market hours, and how Sunday trading rules work.
- Best Time to Call the UK from the USA
The best calling windows between the UK and the US east and west coasts, including the weeks when the gap changes.
- Clock Changes for Shift Workers: Pay, Hours and Rotas
What happens to night shifts that cross the clock change, and the questions to ask your employer about pay and hours.
- Clock Changes and Road Safety in the UK
How the autumn change affects the dark commute, and practical steps for drivers, cyclists and pedestrians.
- Best Time to Call the UK from India
The best windows for calls between India and the UK, with exact conversions for UK summer and winter.
- Best Time to Call the UK from Australia
The best calling windows between the UK and Sydney or Melbourne, and how daylight saving in both countries moves the gap.
- Scheduling Meetings Across UK and US Time Zones
Practical rules for meetings between UK, East Coast and West Coast teams, including the weeks when the gap changes.
- Clock Changes and Children: Bedtimes and Routines
How to ease babies, toddlers and school-age children through the spring and autumn clock changes.
- Clock Changes for Business and IT: Systems, Rotas and Schedules
How the UK clock change affects software, scheduled jobs, call rotas and invoices, and how to protect them.
- Clock Changes and Travel: Flights, Trains and Ferries
What happens to timetables on clock-change weekends, and how to check times when you travel to or from the UK.
- Jet Lag Tips for UK Travellers: US, Asia and Australia
How big the jet lag usually is on common UK routes, and simple ways to adjust to a new time zone.
- Best Time to Call the UK from Pakistan
Calling windows between Pakistan and the UK, with exact conversions for UK winter and summer.
- Best Time to Call the UK from the UAE
Calling windows between Dubai or Abu Dhabi and the UK, with the working-week quirks of the Gulf.
- Best Time to Call the UK from Nigeria
Calling windows between Lagos or Abuja and the UK: one hour ahead in winter, the same in summer.
- Best Time to Call the UK from South Africa
Calling windows between South Africa and the UK: two hours ahead in winter and one hour ahead in summer.
- Best Time to Call the UK from Canada
Calling windows between Toronto, Vancouver and the UK, including the weeks when the gap changes.
- Best Time to Call the UK from New Zealand
Calling windows between New Zealand and the UK, where the gap swings between 11 and 13 hours.
- UK Bank Holidays 2026 to 2028 (England and Wales)
The dates of the bank holidays in England and Wales for 2026, 2027 and 2028, including substitute days.
- London Stock Exchange Trading Hours and the New York Overlap
When the London Stock Exchange is open, how it lines up with New York, and what changes in the weeks when the clocks are out of step.