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

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

CST to UTC Time Converter

Central Standard Time → Coordinated Universal Time

CST = UTC-5UTC = UTC+0

⚠️ CST is ambiguous — on this page it means Central Standard Time. It also refers to:

China Standard Time (Beijing) → UTC ↗Cuba Standard Time (Havana) → UTC ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

UTC (London)

United Kingdom · +6h

15:00

New York

USA · +1h

10:00

Tokyo

Japan · +14h

23:00

Dubai

United Arab Emirates · +9h

18:00

Sydney

Australia · +15h

00:00+1 day

CST (Chicago) vs UTC (London) — time difference

CST (Chicago) is 5 hours behind UTC (London). Midday in CST (Chicago) lines up with 17:00 in UTC (London).

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

Shared working hours

There is a 3-hour window each day where both CST (Chicago) and UTC (London) are within standard business hours (09:00–17:00).

00:0006:0012:0018:0024:00

CST (Chicago)

UTC (London)

Overlap (3h)

Optimal meeting slots

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

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

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

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

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

Upcoming public holidays

CST (Chicago)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

UTC (London)

No upcoming public holidays this year.

How to work with CST (Chicago) and UTC (London) time zones

Coordinating between CST (Chicago) (USA) and UTC (London) (United Kingdom) means working around a 5-hour time difference. The 3-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 How to schedule across these time zones

✅

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

✅

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

✅

Schedule at 11:00–12:00 (CST (Chicago)) for a 16:00–17:00 slot in UTC (London) — 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 CST (Chicago) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

CST (Chicago) ↔ UTC (London)

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

CST (Chicago)

UTC (London)

00:00

05:00

01:00

06:00

02:00

07:00

03:00

08:00