CAT to Riyadh
+1hCAT
CATSOURCERiyadh
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
CAT and AST on the World Map
The map below highlights the CAT (Central Africa Time) and AST (Arabia Standard 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.
AST – Arabia Standard Time
UTC+03:00Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.
- •None of the Gulf states on Arabia Standard Time observe daylight saving.
- •AST is the same offset as Moscow Standard Time and East Africa Time.
- •Riyadh is one hour ahead of Central European Time in winter.
- •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
About Riyadh
WikipediaRiyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
Riyadh is growing rapidly as part of Saudi Vision 2030 modernization.
Comparing Time Zones: CAT and Riyadh
CAT runs on Central Africa Time (CAT) at UTC+02:00. Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. That puts CAT 1 hour ahead of Riyadh — a difference of +1h at the current offsets.
In practice, when it is 9:00 AM in CAT it is 10:00 AM in Riyadh. Midnight in CAT is 1:00 AM in Riyadh. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CAT to Riyadh time conversion table
| CAT (CAT) | Riyadh (AST) | 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 CAT to Riyadh time
- Scheduling a call from CAT to Riyadh: a 10:00 AM start in CAT lands at 11:00 AM in Riyadh, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both CAT and Riyadh are inside the 9-to-5 working day between 9:00 AM and 4:00 PM CAT time (10:00 AM–5:00 PM AST). That is roughly 7 hours of usable overlap.
- Watching a live event or market open: CAT viewers need 10:00 AM in Riyadh to catch a 9:00 AM start there, and 11:00 PM if the event is anchored to CAT.
- Always state the zone abbreviation, not just the hour. "3:00 PM CAT" is unambiguous; "3 PM" across a +1h gap is not.
- Block 9:00 AM–4:00 PM CAT as the recurring meeting window if you work primarily from CAT and need Riyadh 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 AST (Arabia Standard Time)
Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.
Best time to call between CAT and Riyadh
Both CAT and Riyadh sit inside the 9 AM – 5 PM working day between 9:00 AM–4:00 PM CAT, which is 10:00 AM–5:00 PM AST. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
CAT and Riyadh share 7 hours of working-hours overlap (9:00 AM–4:00 PM CAT), so scheduling a live meeting is straightforward.
CAT is 1 hour ahead of Riyadh (CAT UTC+02:00 → AST UTC+03:00). The shared working window is 9:00 AM–4:00 PM CAT. Remember to re-check around daylight-saving transitions.
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 Riyadh?
CAT (CAT, UTC+02:00) is 1 hour ahead of Riyadh (AST, UTC+03:00). The gap is currently +1h.
How do I convert CAT time to Riyadh time?
Add +1h to CAT local time. For example, 9:00 AM in CAT is 10:00 AM in Riyadh.
What time is it in Riyadh right now?
Riyadh uses AST at UTC+03:00. 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 Riyadh from CAT?
Call between 9:00 AM and 4:00 PM CAT — that maps to 10:00 AM–5:00 PM AST and keeps both parties inside the working day.
Which is ahead, CAT or Riyadh?
CAT is 1 hour ahead of Riyadh. When it is 12:00 PM in CAT it is 1:00 PM in Riyadh.
Do CAT and Riyadh use different time zones?
CAT uses CAT at UTC+02:00, while Riyadh (Saudi Arabia) uses AST at UTC+03:00. The IANA identifiers are Africa/Harare and Asia/Riyadh.
Does daylight saving time affect the CAT–Riyadh difference?
Neither zone observes daylight saving time, so the +1h offset between CAT and Riyadh 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 Riyadh?
Not normally. The +1h gap only pushes the date over for late-evening times.
What is the time difference between CAT and Riyadh?
Riyadh is +1h from CAT.
What timezone is CAT in?
CAT operates on its local timezone.
What timezone is Riyadh in?
Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
What are the business hours in Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
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 AST timezone?
Major cities in the AST timezone include Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
What is the UTC offset for AST?
Arabia Standard Time (AST) is at UTC+03:00.
What should I know about the AST timezone?
None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.
When is it midnight in CAT, what time is it in Riyadh?
When it is 12:00 AM (midnight) in CAT (CAT), it is +1h later in Riyadh (AST).
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