| CITY | LOCAL TIME | Difference | Coming up |
|---|---|---|---|
| London United Kingdom | 01:00 | ±0h | |
| Berlin Germany | 02:00 | +1h | |
| Dubai UAE | 04:00 | +3h | Becomes +4h on 25 Oct |
| Tokyo Japan | 09:00 | +8h | Becomes +9h on 25 Oct |
| Sydney Australia | 10:00 | +9h | Becomes +10h on 4 Oct |
| New York United States | 20:00Wed | −5h | Becomes −4h on 24 Oct |
| Los Angeles United States | 17:00Wed | −8h | Becomes −7h on 24 Oct |
Cardiff, United Kingdom runs on UTC+1. Clocks move forward each spring and back each autumn: UTC+0 in winter, UTC+1 in summer. Next change: 25 Oct. The time difference between Cardiff and New York is 5 hours. Standard 9-to-6 working hours overlap for about 4 hours a day with New York. A good time to connect: 14:00–18:00 in Cardiff lines up with 09:00–13:00 in New York. Cardiff and London currently share the same clock. Standard 9-to-6 working hours overlap for about 9 hours a day with London. A good time to connect: 09:00–18:00 in Cardiff lines up with 09:00–18:00 in London. The time difference between Cardiff and Tokyo is 8 hours. Standard 9-to-6 working hours overlap for about 1 hour a day with Tokyo. A good time to connect: 09:00–10:00 in Cardiff lines up with 17:00–18:00 in Tokyo. This timezone is also shared with cities such as Lisbon, Dublin, Edinburgh. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Cardiff.
Cardiff (United Kingdom) is home to roughly 370K people. Today brings about 11.7 hours of daylight: sunrise at 07:11, sunset at 18:53. Clocks move forward each spring and back each autumn: UTC+0 in winter, UTC+1 in summer. Next change: 25 Oct. It sits in the Northern Hemisphere, about 51° north of the equator. Traffic drives on the left.
Flag
United Kingdom
Capital
London
Continent
Europe
Time Zone
UTC+1 · Europe/London
Coordinates
51.48°N, 3.18°W
Currency
GBP (£)
Calling Code
+44
Driving Side
Left
Hemisphere
Northern
Language
English
Measurement System
Metric
Did You Know?
In 1913 Cardiff exported roughly 10.7 million tonnes of coal, more than any other port in the world. The Coal Exchange here is said to have hosted the first ever million-pound deal. Within fifty years the trade was essentially finished.
The clock: Cardiff runs on GMT and BST. Lying further west than London, its sunsets come about twelve minutes later on the same clock — a small dividend of sharing a time zone with a country to your east.
Cardiff lies at 3.2°W. Its time zone, UTC+0, is built around the prime meridian (0°). The 3.2° gap between them means the clock runs roughly 13 minutes ahead of the sun: solar noon arrives at about 12:13 rather than 12:00. Under daylight saving the clocks move 60 minutes forward, widening the gap to 73 minutes and pushing solar noon to 13:13.
The longest day of 2026 is 22 June, with 16h 38m of daylight. The shortest is 22 December, with 7h 50m. The swing between them is 8h 48m. This is the latitude band where the difference between summer and winter evenings is most obvious.
The earliest sunrise and the latest sunset do not land on the longest day. In Cardiff the sun comes up earliest on 18 June at 04:55, while the latest sunset waits until 26 June at 21:34. The equation of time is what separates them: the Earth's elliptical orbit and axial tilt move solar noon back and forth by several minutes over the year.
The sky stays usably light for a while after the sun goes down. In Cardiff that civil twilight runs about 33 minutes at the equinox, stretching to 48 minutes at the solstice.
Every figure in this section is computed from the city's own latitude, longitude and IANA time zone using NOAA solar algorithms (Spencer, 1971), accurate to about ±2 arcminutes below 65° latitude.
The official timezone for Cardiff, United Kingdom is Europe/London with a current UTC offset of UTC+1.
Cardiff has an estimated population of 370K and is located at coordinates 51.48°N, 3.18°W.
Cardiff gets 16h 38m of daylight on its longest day and 7h 50m on its shortest, averaging 12h 16m a day across the year.
Solar noon in Cardiff falls at about 12:13 on UTC+0 standard time, because the city sits 3.2° from the meridian its zone is built on.
Once the Biggest Coal Port on Earth: In 1913 Cardiff exported roughly 10.7 million tonnes of coal, more than any other port in the world. The Coal Exchange here is said to have hosted the first ever million-pound deal.