BST to CAT
+1hBST
BSTSOURCECAT
CATGreen rows indicate typical business hours (9 AM - 5 PM)
BST and CAT on the World Map
The map below highlights the BST (British Summer Time) and CAT (Central Africa Time) timezone regions across the globe.
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.
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 to CAT Time Difference – Complete Guide
BST runs on British Summer Time (BST) at UTC+01:00. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts BST 1 hour ahead of CAT — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in BST it is 10:00 AM in CAT. Midnight in BST is 1:00 AM in CAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BST to CAT time conversion table
| BST (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 BST to CAT time
- Scheduling a call from BST to CAT: a 10:00 AM start in BST lands at 11:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BST 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.
- Coordinating a BST-based team with CAT 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 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 BST and need CAT colleagues present.
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.
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 BST and CAT
Both BST 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
BST and CAT share 7 hours of working-hours overlap (9:00 AM–4:00 PM BST), so scheduling a live meeting is straightforward.
BST 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
BST
☀ 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:
Frequently Asked Questions
What is the time difference between BST and CAT?
BST (BST, UTC+01:00) is 1 hour ahead of CAT (CAT, UTC+02:00). The gap is currently +1h.
How do I convert BST time to CAT time?
Add +1h to BST local time. For example, 9:00 AM in BST 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 BST.
What is the best time to call CAT from BST?
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, BST or CAT?
BST is 1 hour ahead of CAT. When it is 12:00 PM in BST it is 1:00 PM in CAT.
Does daylight saving time affect the BST–CAT difference?
Neither zone observes daylight saving time, so the +1h offset between BST and CAT is fixed all year.
Which other cities share BST's time zone?
BST also covers London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool and 2 more.
Which countries use BST, BST's zone?
BST is used in United Kingdom.
Is there a day difference between BST and CAT?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between BST and CAT?
CAT is +1h from BST.
What timezone is BST in?
BST operates on its local timezone.
What timezone is CAT in?
CAT operates on its local timezone.
Which countries use BST (British Summer Time)?
BST is used in United Kingdom.
Does BST observe daylight saving time?
Yes, BST switches to BST during summer months.
What are some interesting facts about BST?
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.
Which cities are in the CAT timezone?
Major cities in the CAT timezone include Harare, Lusaka, Maputo, Lilongwe, Kigali.
What is the UTC offset for CAT?
Central Africa Time (CAT) is at UTC+02:00.
What should I know about the CAT timezone?
Central Africa Time is fixed at UTC+02:00 with no daylight saving. CAT matches South Africa Standard Time (SAST) all year.
When is it midnight in BST, what time is it in CAT?
When it is 12:00 AM (midnight) in BST (BST), it is +1h later in CAT (CAT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More BST time conversions
- bst to london
- bst to gmt
- bst to uk
- bst to new york
- bst to dubai
- bst to tokyo
- bst to singapore
- bst to sydney
- bst to los angeles
- bst to paris
- bst to delhi
- bst to mumbai
- bst to berlin
- bst to hong kong
- bst to toronto
- bst to kathmandu
- new york to bst
- london to bst
- dubai to bst
- tokyo to bst
- singapore to bst
- sydney to bst
- los angeles to bst
- paris to bst
- delhi to bst
- mumbai to bst
- berlin to bst
- hong kong to bst
- toronto to bst
- kathmandu to bst
See every conversion from BST →·See every conversion from CAT →