Coordinated Universal Time (utc) is used in United Kingdom. The IANA timezone identifier is UTC.

Central Daylight Time (cdt) is used in USA. The IANA timezone identifier is America/Chicago.

UTC to CDT Time Converter

Coordinated Universal Time → Central Daylight Time

UTC = UTC+0CDT = UTC-5

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

CDT (Chicago)

USA · -6h

03:00

New York

USA · -5h

04:00

Tokyo

Japan · +8h

17:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

UTC (London) ↔ CDT (Chicago) — time offset

UTC (London) is 5 hours ahead of CDT (Chicago). When it's noon in UTC (London), it's 07:00 in CDT (Chicago).

UTC (London) observes Europe/London and CDT (Chicago) observes America/Chicago — a 5 hours gap between them.

Mutual working hours

Both UTC (London) and CDT (Chicago) are simultaneously in business hours for 3 hours per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

UTC (London)

CDT (Chicago)

Overlap (3h)

Meeting time recommendations

UTC (London) and CDT (Chicago) share 3 hours of business hours overlap daily.

14:00 London / 09:00 Chicago✓ Both working

15:00 London / 10:00 Chicago✓ Both working

16:00 London / 11:00 Chicago✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Public holidays this year

UTC (London)

No upcoming public holidays this year.

CDT (Chicago)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

UTC (London) and CDT (Chicago) — practical scheduling

Teams in UTC (London) (United Kingdom) and CDT (Chicago) (USA) face a 5-hour time difference day to day. A 3-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.

💡 Practical scheduling guidelines

✅

Schedule at 14:00–15:00 (UTC (London)) for a 09:00–10:00 slot in CDT (Chicago) — the sweet spot where both teams are working.

✅

Schedule at 15:00–16:00 (UTC (London)) for a 10:00–11:00 slot in CDT (Chicago) — the sweet spot where both teams are working.

✅

Schedule at 16:00–17:00 (UTC (London)) for a 11:00–12:00 slot in CDT (Chicago) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any UTC (London) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

UTC (London) ↔ CDT (Chicago)

3h of business hours overlap daily (09:00–17:00)

UTC (London)

CDT (Chicago)

00:00

19:00-1d

01:00

20:00-1d

02:00

21:00-1d

03:00

22:00-1d

04:00

23:00-1d

05:00

00:00

06:00

01:00

07:00

02:00

08:00

03:00

09:00Working

04:00off

10:00Working

05:00off

11:00Working

06:00off

12:00Working

07:00off

13:00Working

08:00off

14:00Working

09:00Working

15:00Working

10:00Working

16:00Working

11:00Working

17:00

12:00Working

18:00

13:00Working

19:00

14:00Working

20:00

15:00Working

21:00

16:00Working

22:00

17:00

23:00

18:00

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between utc and cdt?

Coordinated Universal Time (utc) is UTC+0 and Central Daylight Time (cdt) is UTC-5. The difference between them is 5 hours.

Where is utc used?

Coordinated Universal Time (utc) is used in United Kingdom and surrounding regions. The IANA timezone identifier is UTC.

Where is cdt used?

Central Daylight Time (cdt) is used in USA and surrounding regions. The IANA timezone identifier is America/Chicago.

How do I convert utc to cdt?

Use the interactive converter above. Drag the time slider to any utc time and the cdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular UTC conversions

UTC → New York UTC → Tokyo UTC → Dubai UTC → Sydney UTC → Paris UTC → Berlin UTC → Singapore UTC → Los Angeles UTC → Toronto UTC → Mumbai

Popular CDT conversions

London → CDT New York → CDT Tokyo → CDT Dubai → CDT Sydney → CDT Paris → CDT Berlin → CDT Singapore → CDT Los Angeles → CDT Toronto → CDT