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

British Summer Time (bst) is used in United Kingdom. The IANA timezone identifier is Europe/London.

CDT to BST Time Converter

Central Daylight Time → British Summer Time

CDT = UTC-5BST = UTC+1

⚠️ BST is ambiguous — on this page it means British Summer Time. It also refers to:

CDT → Bangladesh Standard Time (Dhaka) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BST (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

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

CDT (Chicago) is 6 hours behind BST (London). When CDT (Chicago) clocks hit noon, BST (London) reads 18:00.

CDT (Chicago) observes America/Chicago and BST (London) observes Europe/London — a 6 hours gap between them.

Mutual working hours

Every working day, CDT (Chicago) and BST (London) are both in business hours for 2 hours simultaneously.

00:0006:0012:0018:0024:00

CDT (Chicago)

BST (London)

Overlap (2h)

Optimal meeting slots

CDT (Chicago) and BST (London) share 2 hours of business hours overlap daily.

09:00 Chicago / 15:00 London✓ Both working

10:00 Chicago / 16:00 London✓ Both working

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

Holiday calendar for both locations

⚡ Both locations have upcoming holidays, check availability before scheduling.

CDT (Chicago)7 holidays

Jul 3Independence DaySOON

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

Nov 11Veterans Day

BST (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

Working across CDT (Chicago) and BST (London)

Coordinating between CDT (Chicago) (USA) and BST (London) (United Kingdom) means working around a 6-hour time difference. The 2-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 Best practice for cross-timezone meetings

✅

Schedule at 09:00–10:00 (CDT (Chicago)) for a 15:00–16:00 slot in BST (London) — the sweet spot where both teams are working.

✅

Schedule at 10:00–11:00 (CDT (Chicago)) for a 16:00–17:00 slot in BST (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 CDT (Chicago) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

CDT (Chicago) ↔ BST (London)

2h of business hours overlap daily (09:00–17:00)

CDT (Chicago)

BST (London)

00:00

06:00

01:00

07:00

02:00

08:00