Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

United Kingdom to CST

-7h

United Kingdom

BSTSOURCE

UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CST

UTC-05:00☀ DST active

HH05

MM00

05:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

United Kingdom

CST

12:00 AM

6:00 PM-1

2:00 AM

8:00 PM-1

4:00 AM

10:00 PM-1

6:00 AM

12:00 AM

8:00 AM

2:00 AM

10:00 AM

4:00 AM

12:00 PM

6:00 AM

2:00 PM

8:00 AM

4:00 PM

10:00 AM

6:00 PM

12:00 PM

8:00 PM

2:00 PM

10:00 PM

4:00 PM

Green rows indicate typical business hours (9 AM - 5 PM)

BST and CST on the World Map

The map below highlights the BST (Greenwich Mean Time) and CST (Central Standard Time) timezone regions across the globe.

BST Zone

→

CST Zone

Explore all world timezones interactively →

GMT – Greenwich Mean Time

UTC+00:00

Greenwich Mean Time (GMT) is the mean solar time at the Royal Observatory in Greenwich, London. It is the same as UTC+00:00.

Countries in GMT

United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)

Major Cities in GMT

LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia

Key Facts about GMT

•GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London.
•The Royal Observatory in Greenwich has been the reference point for GMT since 1884.
•GMT and UTC are often used interchangeably, but UTC is based on atomic clocks.
•Iceland uses GMT year-round and never observes daylight saving time.
•The UK switches from GMT to BST (British Summer Time) in late March each year.

Daylight Saving:Yes – switches to BST

Learn more about GMT on Wikipedia

CST – Central Standard Time

UTC-06:00

Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.

Countries in CST

United States (Central)Canada (Manitoba, Saskatchewan)MexicoGuatemalaHondurasEl SalvadorCosta RicaNicaraguaBelize

Major Cities in CST

ChicagoHoustonDallasSan AntonioMexico CityAustinWinnipegMemphisMilwaukeeNashvilleKansas CityNew OrleansMinneapolisGuatemala City

Key Facts about CST

•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.

Daylight Saving:Yes – switches to CDT

Learn more about CST on Wikipedia

Understanding the -7h Gap: United Kingdom vs CST

United Kingdom runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. CST runs on Central Standard Time (CST) at UTC-06:00. That puts United Kingdom 7 hours behind CST — a difference of -7h at the current offsets.

In practice, when it is 9:00 AM in United Kingdom it is 2:00 AM in CST. Midnight in United Kingdom is 5:00 PM in CST.United Kingdom observes daylight saving time while CST does not, so the gap narrows or widens by an hour part of the year.

United Kingdom to CST time conversion table

United Kingdom (BST)	CST (CST)	Day
12:00 AM	5:00 PM	previous day
6:00 AM	11:00 PM	previous day
7:00 AM	12:00 AM	same day
8:00 AM	1:00 AM	same day
9:00 AM	2:00 AM	same day
12:00 PM	5:00 AM	same day
3:00 PM	8:00 AM	same day
5:00 PM	10:00 AM	same day
6:00 PM	11:00 AM	same day
9:00 PM	2:00 PM	same day

Why people convert United Kingdom to CST time

Scheduling a call from United Kingdom to CST: a 10:00 AM start in United Kingdom lands at 3:00 AM in CST, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both United Kingdom and CST are inside the 9-to-5 working day between 4:00 PM and 5:00 PM BST time (9:00 AM–10:00 AM CST). That is roughly 1 hours of usable overlap.
Watching a live event or market open: United Kingdom viewers need 2:00 AM in CST to catch a 9:00 AM start there, and 7:00 AM if the event is anchored to United Kingdom.

Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a -7h gap is not.
Block 4:00 PM–5:00 PM BST as the recurring meeting window if you work primarily from United Kingdom and need CST colleagues present.
United Kingdom: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the -7h gap.

About GMT (Greenwich Mean Time)

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

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.

Best time to call between United Kingdom and CST

Both United Kingdom and CST sit inside the 9 AM – 5 PM working day between 4:00 PM–5:00 PM BST, which is 9:00 AM–10:00 AM CST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

United Kingdom and CST overlap for only 60 minutes (4:00 PM–5:00 PM BST), so meetings have to be booked precisely.

United Kingdom is 7 hours behind CST (BST UTC+01:00 → CST UTC-06:00). The shared working window is 4:00 PM–5:00 PM BST. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

United Kingdom

☀ Currently in DST

Standard: UTC+00:00 · DST: UTC+01:00

Clocks fall back on Sun, Oct 25, 2026

CST

☀ Currently in DST

Standard: UTC-06:00 · DST: UTC-05:00

Clocks fall back on Sun, Nov 1, 2026

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between United Kingdom and CST?

United Kingdom (BST, UTC+01:00) is 7 hours behind CST (CST, UTC-06:00). The gap is currently -7h.

How do I convert United Kingdom time to CST time?

Add -7h to United Kingdom local time. For example, 9:00 AM in United Kingdom is 2:00 AM in CST.

What time is it in CST right now?

CST uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -7h offset from United Kingdom.

What is the best time to call CST from United Kingdom?

Call between 4:00 PM and 5:00 PM BST — that maps to 9:00 AM–10:00 AM CST and keeps both parties inside the working day.

Which is behind, United Kingdom or CST?

United Kingdom is 7 hours behind CST. When it is 12:00 PM in United Kingdom it is 5:00 AM in CST.

Do United Kingdom and CST use different time zones?

United Kingdom (United Kingdom) uses BST at UTC+01:00, while CST uses CST at UTC-06:00. The IANA identifiers are Europe/London and America/Chicago.

Does daylight saving time affect the United Kingdom–CST difference?

Yes at the moment: United Kingdom is on daylight saving time and CST is not, so the -7h gap shifts by an hour when exactly one of them changes clocks.

Which other cities share United Kingdom's time zone?

BST also covers London, Dublin, Lisbon, Accra, Reykjavik, Edinburgh, Casablanca, Dakar and 5 more.

Which countries use BST, United Kingdom's zone?

BST is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, Mali, Mauritania and 7 more.

Is there a day difference between United Kingdom and CST?

Not normally. The -7h gap only pushes the date over the previous day.

What is the time difference between United Kingdom and CST?

CST is -7h from United Kingdom.

What timezone is United Kingdom in?

United Kingdom operates on its local timezone.

What timezone is CST in?

CST operates on its local timezone.

Which countries use GMT (Greenwich Mean Time)?

GMT is used in United Kingdom, Ireland, Iceland, Portugal (mainland), Ghana, Senegal, and 9 more countries.

Does GMT observe daylight saving time?

Yes, GMT switches to BST during summer months.

What are some interesting facts about GMT?

GMT is based on the Prime Meridian (0° longitude) passing through Greenwich, London. The Royal Observatory in Greenwich has been the reference point for GMT since 1884.