London, United Kingdom to Cardiff
Both cities keep the same time.
London
United Kingdom
Day
Difference
Cardiff
Wales, UK
Day
Best window to call: 09:00 - 17:00 London time, both sides are inside 09:00-17:00.
Hour-by-hour conversion
Every hour of the day in London with its equivalent in Cardiff. Green rows fall inside business hours for both.
About the London-Cardiff gap
London sits in the Europe/London time zone (BST), while Cardiff uses Europe/London (BST). Both currently run on UTC+1, so no conversion is needed.
For scheduling, the practical overlap runs from 09:00 to 17:00 in London. Booking inside that band means neither party is dialling in before breakfast or after dinner.
Related comparisons
- Cardiff to London
- London to New York
- London to Los Angeles
- London to Chicago
- London to São Paulo
- London to Paris
See also current time in London and current time in Cardiff.
London and Cardiff, questions
- What is the time difference between London and Cardiff?
- There is none. London and Cardiff are both on UTC+1, so the clock reads the same in both cities.
- What is the best time to call Cardiff from London?
- Between 09:00 and 17:00 London time, both cities are inside normal business hours of 09:00 to 17:00. Outside that window one side is either not yet at work or has already left.
- Is the difference between London and Cardiff always the same?
- The gap is mostly stable, but if both cities observe daylight saving they may not switch on the same date, there are usually a few weeks each spring and autumn when the difference shifts by an hour.