BST to CST Converter

British Summer Time → Central Standard Time · BST is 6 hours ahead of CDT in summer

BST
—
CST
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BST and CST are the same time

BST to CST Conversion Table

BSTCST
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Green rows = business hours overlap (9:00 AM – 6:00 PM BST)

Major BST Cities
  • London
  • Manchester
  • Edinburgh
  • Birmingham
  • Dublin
  • Cardiff
Major CST Cities
  • Chicago, IL
  • Houston, TX
  • Dallas, TX
  • Minneapolis, MN
  • Kansas City, MO
  • New Orleans, LA
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BST vs CST — London to Chicago

BST is UTC+1 (UK summer). CST is UTC-6 (US Central winter). In summer when both use daylight saving: BST (UTC+1) vs CDT (UTC-5) = 6 hours.

Best overlap window: 3:00–6:00 PM BST = 9:00 AM–12:00 PM CDT.

Frequently Asked Questions

How many hours is BST ahead of CST?

BST (British Summer Time, UTC+1) is 6 hours ahead of CST (Central Standard Time, UTC-6). During US Central Daylight Time (CDT, UTC-5), BST is 6 hours ahead. The gap stays at 6 hours throughout summer when both zones observe daylight saving simultaneously.

What is 9 AM BST in CST/CDT?

9:00 AM BST is 3:00 AM CST or 3:00 AM CDT. The best overlap is 3:00–5:00 PM BST = 9:00–11:00 AM CDT in summer.

What is the best overlap for London (BST) and Chicago (CDT)?

In summer, the best BST–CDT overlap is 3:00–6:00 PM BST = 9:00 AM–12:00 PM CDT. This gives Chicago a morning window while London is in mid-to-late afternoon.