BST to CDT Time Converter
British Summer Time → Central Daylight Time
BST = UTC+1CDT = UTC-5
⚠️ BST is ambiguous — on this page it means British Summer Time. It also refers to:
BST (London) ↔ CDT (Chicago)
2h of business hours overlap daily (09:00–17:00)
BST (London)
CDT (Chicago)
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.
Frequently Asked Questions
What is the difference between bst and cdt?
British Summer Time (bst) is UTC+1 and Central Daylight Time (cdt) is UTC-5. The difference between them is 6 hours.
Where is bst used?
British Summer Time (bst) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London. Note: bst is ambiguous and may refer to other timezones.
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 bst to cdt?
Use the interactive converter above. Drag the time slider to any bst time and the cdt equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
Popular BST conversions
BST → New YorkBST → TokyoBST → DubaiBST → SydneyBST → ParisBST → BerlinBST → SingaporeBST → Los AngelesBST → TorontoBST → Mumbai