CAT to BST
-1hCAT
CATSOURCEBST
BSTGreen rows indicate typical business hours (9 AM - 5 PM)
CAT and BST on the World Map
The map below highlights the CAT (Central Africa Time) and BST (British Summer Time) timezone regions across the globe.
CAT – Central Africa Time
UTC+02:00Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.
- •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.
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.
Comparing Time Zones: CAT and BST
CAT runs on Central Africa Time (CAT) at UTC+02:00. BST runs on British Summer Time (BST) at UTC+01:00. That puts CAT 1 hour behind BST — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in CAT it is 8:00 AM in BST. Midnight in CAT is 11:00 PM in BST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CAT to BST time conversion table
| CAT (CAT) | BST (BST) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert CAT to BST time
- Scheduling a call from CAT to BST: a 10:00 AM start in CAT lands at 9:00 AM in BST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both CAT and BST are inside the 9-to-5 working day between 10:00 AM and 5:00 PM CAT time (9:00 AM–4:00 PM BST). That is roughly 7 hours of usable overlap.
- Booking travel or deliveries: tracking BST local time against CAT keeps pickup windows and arrival estimates honest across the -1h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM CAT" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM CAT as the recurring meeting window if you work primarily from CAT and need BST colleagues present.
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.
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 CAT and BST
Both CAT and BST sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM CAT, which is 9:00 AM–4:00 PM BST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
CAT and BST share 7 hours of working-hours overlap (10:00 AM–5:00 PM CAT), so scheduling a live meeting is straightforward.
CAT is 1 hour behind BST (CAT UTC+02:00 → BST UTC+01:00). The shared working window is 10:00 AM–5:00 PM CAT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
CAT
Does not observe DST
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 CAT and BST?
CAT (CAT, UTC+02:00) is 1 hour behind BST (BST, UTC+01:00). The gap is currently -1h.
How do I convert CAT time to BST time?
Add -1h to CAT local time. For example, 9:00 AM in CAT is 8:00 AM 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 -1h offset from CAT.
What is the best time to call BST from CAT?
Call between 10:00 AM and 5:00 PM CAT — that maps to 9:00 AM–4:00 PM BST and keeps both parties inside the working day.
Which is behind, CAT or BST?
CAT is 1 hour behind BST. When it is 12:00 PM in CAT it is 11:00 AM in BST.
Does daylight saving time affect the CAT–BST difference?
Neither zone observes daylight saving time, so the -1h offset between CAT and BST is fixed all year.
Which other cities share CAT's time zone?
CAT also covers Harare, Lusaka, Maputo, Lilongwe, Kigali.
Which countries use CAT, CAT's zone?
CAT is used in Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi, DR Congo (east).
Is there a day difference between CAT and BST?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between CAT and BST?
BST is -1h from CAT.
What timezone is CAT in?
CAT operates on its local timezone.
What timezone is BST in?
BST operates on its local timezone.
Which countries use CAT (Central Africa Time)?
CAT is used in Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi, and 1 more countries.
Does CAT observe daylight saving time?
No, CAT does not observe daylight saving time and remains at UTC+02:00 year-round.
What are some interesting 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.
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 CAT, what time is it in BST?
When it is 12:00 AM (midnight) in CAT (CAT), it is -1h later in BST (BST).
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