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 CAT

+1h

United Kingdom

BSTSOURCE

UTC+01:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

CAT

UTC+02:00

HH01

MM00

13:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

United Kingdom

CAT

12:00 AM

1:00 AM

2:00 AM

3:00 AM

4:00 AM

5:00 AM

6:00 AM

7:00 AM

8:00 AM

9:00 AM

10:00 AM

11:00 AM

12:00 PM

1:00 PM

2:00 PM

3:00 PM

4:00 PM

5:00 PM

6:00 PM

7:00 PM

8:00 PM

9:00 PM

10:00 PM

11:00 PM

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

BST and CAT on the World Map

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

BST Zone

→

CAT 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

CAT – Central Africa Time

UTC+02:00

Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.

Countries in CAT

ZimbabweZambiaMozambiqueMalawiRwandaBurundiDR Congo (east)

Major Cities in CAT

HarareLusakaMaputoLilongweKigali

Key Facts about CAT

•Central Africa Time is fixed at UTC+02:00 with no daylight saving.
•CAT matches South Africa Standard Time (SAST) all year.
•It is the same offset as Central European Time in winter.
•Harare is level with Johannesburg and one hour ahead of Lagos.

Daylight Saving:No – UTC+02:00 year-round

Learn more about CAT on Wikipedia

United Kingdom vs CAT: Offsets, DST and Best Call Times

United Kingdom runs on British Summer Time (BST) at UTC+01:00, currently observing daylight saving time. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts United Kingdom 1 hour ahead of CAT — a difference of +1h at the current offsets.

In practice, when it is 9:00 AM in United Kingdom it is 10:00 AM in CAT. Midnight in United Kingdom is 1:00 AM in CAT.United Kingdom observes daylight saving time while CAT does not, so the gap narrows or widens by an hour part of the year.

United Kingdom to CAT time conversion table

United Kingdom (BST)	CAT (CAT)	Day
12:00 AM	1:00 AM	same day
6:00 AM	7:00 AM	same day
7:00 AM	8:00 AM	same day
8:00 AM	9:00 AM	same day
9:00 AM	10:00 AM	same day
12:00 PM	1:00 PM	same day
3:00 PM	4:00 PM	same day
5:00 PM	6:00 PM	same day
6:00 PM	7:00 PM	same day
9:00 PM	10:00 PM	same day

Why people convert United Kingdom to CAT time

Scheduling a call from United Kingdom to CAT: a 10:00 AM start in United Kingdom lands at 11:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
Finding shared working hours: both United Kingdom and CAT are inside the 9-to-5 working day between 9:00 AM and 4:00 PM BST time (10:00 AM–5:00 PM CAT). That is roughly 7 hours of usable overlap.
Booking travel or deliveries: tracking CAT local time against United Kingdom keeps pickup windows and arrival estimates honest across the +1h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a +1h gap is not.
Block 9:00 AM–4:00 PM BST as the recurring meeting window if you work primarily from United Kingdom and need CAT 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 +1h 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 CAT (Central Africa Time)

Central Africa Time (CAT) is fixed at UTC+02:00 all year across a broad belt of southern and central Africa, including Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi and the eastern Democratic Republic of the Congo. None of these countries observes daylight saving time, so CAT never shifts. It is the same offset as South Africa Standard Time (SAST) and the winter version of Central European Time, which makes CAT a convenient bridge between African, European and Middle Eastern schedules — Harare is level with Johannesburg all year and one hour ahead of Lagos.

Best time to call between United Kingdom and CAT

Both United Kingdom and CAT sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM BST, which is 10:00 AM–5:00 PM CAT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.

Business hours overlap

United Kingdom and CAT share 7 hours of working-hours overlap (9:00 AM–4:00 PM BST), so scheduling a live meeting is straightforward.

United Kingdom is 1 hour ahead of CAT (BST UTC+01:00 → CAT UTC+02:00). The shared working window is 9:00 AM–4:00 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

CAT

Does not observe DST

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 CAT?

United Kingdom (BST, UTC+01:00) is 1 hour ahead of CAT (CAT, UTC+02:00). The gap is currently +1h.

How do I convert United Kingdom time to CAT time?

Add +1h to United Kingdom local time. For example, 9:00 AM in United Kingdom is 10:00 AM in CAT.

What time is it in CAT right now?

CAT uses CAT at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +1h offset from United Kingdom.

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

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

Which is ahead, United Kingdom or CAT?

United Kingdom is 1 hour ahead of CAT. When it is 12:00 PM in United Kingdom it is 1:00 PM in CAT.

Do United Kingdom and CAT use different time zones?

United Kingdom (United Kingdom) uses BST at UTC+01:00, while CAT uses CAT at UTC+02:00. The IANA identifiers are Europe/London and Africa/Harare.

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

Yes at the moment: United Kingdom is on daylight saving time and CAT is not, so the +1h 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 CAT?

Not normally. The +1h gap only pushes the date over for late-evening times.

What is the time difference between United Kingdom and CAT?

CAT is +1h from United Kingdom.

What timezone is United Kingdom in?

United Kingdom operates on its local timezone.

What timezone is CAT in?

CAT 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.