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Timezone Prime

CST to UK time converter

Convert Central Time (CST/CDT) to UK time (GMT/BST), with daylight saving applied for the exact date you pick.

From

Tue, Oct 27

To

Tue, Oct 27 Same day

CDT 9 to 5 GMT 9 to 5

From zone
Central Daylight Time
Offset and clock
UTC−5 Daylight saving time
IANA name
America/Chicago
To zone
Greenwich Mean Time
Offset and clock
UTC+0 Standard time
IANA name
Europe/London

GMT is 5 hours ahead of CDT.

Time difference
BST is 6 hours ahead of CDT for most of the year (210 days in 2026). The gap is 5 hours for about 4 weeks in 2026.
Meeting window
Working days of 9 AM to 5 PM overlap from 9:00 AM to 11:00 AM CDT, which is 3:00 PM to 5:00 PM BST while CDT and BST apply.
Daylight saving
Both zones change their clocks, on the dates listed below, so the gap can shift during the year.

The same conversion works for every city on these clocks, such as Chicago to London, Chicago to England and Texas to London.

Where CST and UK time apply

Shaded areas follow the official zone boundaries, so a country split across zones is split here too. Hover or tap a region for its local time.

  • Central Time
  • UK time
  • Same UTC offset right now, different zone rules

Drag to pan. Ctrl and scroll, or pinch, to zoom. Boundaries: timezone-boundary-builder, © OpenStreetMap contributors

Hour by hour

Every hour of Tuesday, October 27, 2026, side by side. Days with a clock change show 23 or 25 rows.

Shaded rows fall inside working hours in both places.

Hourly comparison of the two time zones. Choose a time to load it in the converter.
Chicago (CDT) London (GMT) Working hours
12:00 AM 5:00 AM
1:00 AM 6:00 AM
2:00 AM 7:00 AM
3:00 AM 8:00 AM
4:00 AM 9:00 AM
5:00 AM 10:00 AM
6:00 AM 11:00 AM
7:00 AM 12:00 PM
8:00 AM 1:00 PM
9:00 AM 2:00 PM Both working
10:00 AM 3:00 PM Both working
11:00 AM 4:00 PM Both working
12:00 PM 5:00 PM
1:00 PM 6:00 PM
2:00 PM 7:00 PM
3:00 PM 8:00 PM
4:00 PM 9:00 PM
5:00 PM 10:00 PM
6:00 PM 11:00 PM
7:00 PM 12:00 AM next day
8:00 PM 1:00 AM next day
9:00 PM 2:00 AM next day
10:00 PM 3:00 AM next day
11:00 PM 4:00 AM next day

CST to UK time conversion table

Every hour of the Central Time day, plus the common half hours, and their UK time equivalents. The second column covers the part of the year when the clocks are on a different gap.

CST to UK time conversion table
Central Time BST or GMT 6 h ahead, most of the year (337 days in 2026) GMT 5 h ahead, about 4 weeks in 2026
12:00 AM 6:00 AM5:00 AM
1:00 AM 7:00 AM6:00 AM
2:00 AM 8:00 AM7:00 AM
3:00 AM 9:00 AM8:00 AM
4:00 AM 10:00 AM9:00 AM
5:00 AM 11:00 AM10:00 AM
6:00 AM 12:00 PM11:00 AM
7:00 AM 1:00 PM12:00 PM
8:00 AM 2:00 PM1:00 PM
9:00 AM 3:00 PM2:00 PM
9:30 AM 3:30 PM2:30 PM
10:00 AM 4:00 PM3:00 PM
10:30 AM 4:30 PM3:30 PM
11:00 AM 5:00 PM4:00 PM
11:30 AM 5:30 PM4:30 PM
12:00 PM 6:00 PM5:00 PM
12:30 PM 6:30 PM5:30 PM
1:00 PM 7:00 PM6:00 PM
1:30 PM 7:30 PM6:30 PM
2:00 PM 8:00 PM7:00 PM
2:30 PM 8:30 PM7:30 PM
3:00 PM 9:00 PM8:00 PM
3:30 PM 9:30 PM8:30 PM
4:00 PM 10:00 PM9:00 PM
4:30 PM 10:30 PM9:30 PM
5:00 PM 11:00 PM10:00 PM
5:30 PM 11:30 PM10:30 PM
6:00 PM 12:00 AM (next day)11:00 PM
7:00 PM 1:00 AM (next day)12:00 AM (next day)
8:00 PM 2:00 AM (next day)1:00 AM (next day)
9:00 PM 3:00 AM (next day)2:00 AM (next day)
10:00 PM 4:00 AM (next day)3:00 AM (next day)
11:00 PM 5:00 AM (next day)4:00 AM (next day)

How the gap changes in 2026 and 2027

Each row is a stretch of days with one constant difference, split at every clock change.

Time difference periods between CST and UK time
Dates CST UK time Difference
Thu, Jan 1, 2026 until Sun, Mar 8, 2026 CST GMT GMT 6 h ahead
Sun, Mar 8, 2026 until Sun, Mar 29, 2026 CDT GMT GMT 5 h ahead
Sun, Mar 29, 2026 until Sun, Oct 25, 2026 CDT BST BST 6 h ahead
Sun, Oct 25, 2026 until Sun, Nov 1, 2026 CDT GMT GMT 5 h ahead
Sun, Nov 1, 2026 until Sun, Mar 14, 2027 CST GMT GMT 6 h ahead
Sun, Mar 14, 2027 until Sun, Mar 28, 2027 CDT GMT GMT 5 h ahead
Sun, Mar 28, 2027 until Sun, Oct 31, 2027 CDT BST BST 6 h ahead
Sun, Oct 31, 2027 until Sun, Nov 7, 2027 CDT GMT GMT 5 h ahead
Sun, Nov 7, 2027 until Sat, Jan 1, 2028 CST GMT GMT 6 h ahead

Upcoming clock changes

  1. Central Time Sunday, November 1, 2026: at 2:00 AM clocks go back 1 hour to 1:00 AM
  2. Central Time Sunday, March 14, 2027: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  3. UK time Sunday, March 28, 2027: at 1:00 AM clocks go forward 1 hour to 2:00 AM
  4. UK time Sunday, October 31, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  5. Central Time Sunday, November 7, 2027: at 2:00 AM clocks go back 1 hour to 1:00 AM
  6. Central Time Sunday, March 12, 2028: at 2:00 AM clocks go forward 1 hour to 3:00 AM
  7. UK time Sunday, March 26, 2028: at 1:00 AM clocks go forward 1 hour to 2:00 AM

About the two zones

Central Time (CST / CDT)

Central Time follows the clock in Chicago: Central Standard Time (CST, UTC−6) in winter and Central Daylight Time (CDT, UTC−5) during US daylight saving time.

IANA zone
America/Chicago
Offset
UTC−6 standard, UTC−5 daylight saving
Used in
the central United States and parts of Canada
Major cities
Chicago, Houston, Dallas, Minneapolis, Winnipeg, New Orleans

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. Here CST means US Central Time (America/Chicago).

UK time (GMT / BST)

UK time is Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) from the last Sunday in March to the last Sunday in October.

IANA zone
Europe/London
Offset
UTC+0 standard, UTC+1 daylight saving
Used in
the United Kingdom
Major cities
London, Manchester, Birmingham, Edinburgh, Glasgow, Belfast

CST and UK time, answered

What is the time difference between CST and UK time?

BST is 6 hours ahead of CDT for most of the year (210 days in 2026). The gap is 5 hours for about 4 weeks in 2026.

How do I work out the time in London from CST?

London uses UK time. BST is 6 hours ahead of CDT for most of the year (210 days in 2026). The gap is 5 hours for about 4 weeks in 2026. Type any CST time into the CST to UK time converter to see the London time for any date.

What is 9:00 AM CST in UK time?

9:00 AM CDT or CST is 3:00 PM BST or GMT for most of the year (337 days in 2026). 9:00 AM CDT is 2:00 PM GMT for about 4 weeks in 2026.

What is 12:00 PM CST in UK time?

12:00 PM CDT or CST is 6:00 PM BST or GMT for most of the year (337 days in 2026). 12:00 PM CDT is 5:00 PM GMT for about 4 weeks in 2026.

What is 10:00 AM CST in UK time?

10:00 AM CDT or CST is 4:00 PM BST or GMT for most of the year (337 days in 2026). 10:00 AM CDT is 3:00 PM GMT for about 4 weeks in 2026.

What is 5:00 PM CST in UK time?

5:00 PM CDT or CST is 11:00 PM BST or GMT for most of the year (337 days in 2026). 5:00 PM CDT is 10:00 PM GMT for about 4 weeks in 2026.

Is UK time ahead of CST, and by how many hours?

Yes. BST is 6 hours ahead of CDT for most of the year (210 days in 2026). The gap is 5 hours for about 4 weeks in 2026.

What is a good meeting time for CST and UK time?

Working days of 9 AM to 5 PM overlap from 9:00 AM to 11:00 AM CDT, which is 3:00 PM to 5:00 PM BST while CDT and BST apply.

Does daylight saving time affect CST to UK time?

Both zones change their clocks, on their own dates, so the gap can shift during the year. The next change is on Sunday, November 1, 2026 in Central Time.

Which CST does the CST to UK time converter use?

CST is also used for China Standard Time (UTC+8) and Cuba Standard Time. Here CST means US Central Time (America/Chicago).

Related conversions

From Central Time

To UK time