CST to BST
+7hCST
CSTSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and BST on the World Map
The map below highlights the CST (Central Standard Time) and BST (British Summer Time) timezone regions across the globe.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
Everything You Need to Know About CST and BST Time
CST runs on Central Standard Time (CST) at UTC-06:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts CST 7 hours ahead of BST — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in CST it is 4:00 PM in BST. Midnight in CST is 7:00 AM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CST to BST time conversion table
| CST (CST) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert CST to BST time
- Scheduling a call from CST to BST: a 10:00 AM start in CST lands at 5:00 PM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both CST and BST are inside the 9-to-5 working day between 9:00 AM and 10:00 AM CST time (4:00 PM–5:00 PM BST). That is roughly 1 hours of usable overlap.
- Coordinating a CST-based team with BST contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM CST as the recurring meeting window if you work primarily from CST and need BST colleagues present.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
About BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
Best time to call between CST and BST
Both CST and BST sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM CST, which is 4:00 PM–5:00 PM BST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
CST and BST overlap for only 60 minutes (9:00 AM–10:00 AM CST), so meetings have to be booked precisely.
CST is 7 hours ahead of BST (CST UTC-06:00 → BST UTC+01:00). The shared working window is 9:00 AM–10:00 AM CST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between CST and BST?
CST (CST, UTC-06:00) is 7 hours ahead of BST (BST, UTC+01:00). The gap is currently +7h.
How do I convert CST time to BST time?
Add +7h to CST local time. For example, 9:00 AM in CST is 4:00 PM in BST.
What time is it in BST right now?
BST uses BST at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from CST.
What is the best time to call BST from CST?
Call between 9:00 AM and 10:00 AM CST — that maps to 4:00 PM–5:00 PM BST and keeps both parties inside the working day.
Which is ahead, CST or BST?
CST is 7 hours ahead of BST. When it is 12:00 PM in CST it is 7:00 PM in BST.
Does daylight saving time affect the CST–BST difference?
Neither zone observes daylight saving time, so the +7h offset between CST and BST is fixed all year.
Which other cities share CST's time zone?
CST also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CST, CST's zone?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.
Is there a day difference between CST and BST?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between CST and BST?
BST is +7h from CST.
What timezone is CST in?
CST operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the BST timezone?
Major cities in the BST timezone include London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool.
What is the UTC offset for BST?
British Summer Time (BST) is at UTC+01:00. During daylight saving time, it shifts to BST.
What should I know about the BST timezone?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
When is it midnight in CST, what time is it in BST?
When it is 12:00 AM (midnight) in CST (CST), it is +7h later in BST (BST).
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