Riyadh to CAT
-1hRiyadh
ASTSOURCECAT
CATGreen rows indicate typical business hours (9 AM - 5 PM)
AST and CAT on the World Map
The map below highlights the AST (Arabia Standard Time) and CAT (Central Africa Time) timezone regions across the globe.
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).
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.
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.
Riyadh to CAT Time Difference – Complete Guide
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts Riyadh 1 hour behind CAT — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 8:00 AM in CAT. Midnight in Riyadh is 11:00 PM in CAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to CAT time conversion table
| Riyadh (AST) | CAT (CAT) | 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 Riyadh to CAT time
- Scheduling a call from Riyadh to CAT: a 10:00 AM start in Riyadh lands at 9:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Riyadh and CAT are inside the 9-to-5 working day between 10:00 AM and 5:00 PM AST time (9:00 AM–4:00 PM CAT). That is roughly 7 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Riyadh is 7:00 PM in CAT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM AST as the recurring meeting window if you work primarily from Riyadh and need CAT colleagues present.
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.
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 Riyadh and CAT
Both Riyadh and CAT sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM AST, which is 9:00 AM–4:00 PM CAT. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Riyadh and CAT share 7 hours of working-hours overlap (10:00 AM–5:00 PM AST), so scheduling a live meeting is straightforward.
Riyadh is 1 hour behind CAT (AST UTC+03:00 → CAT UTC+02:00). The shared working window is 10:00 AM–5:00 PM AST. 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 Riyadh and CAT?
Riyadh (AST, UTC+03:00) is 1 hour behind CAT (CAT, UTC+02:00). The gap is currently -1h.
How do I convert Riyadh time to CAT time?
Add -1h to Riyadh local time. For example, 9:00 AM in Riyadh is 8:00 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 Riyadh.
What is the best time to call CAT from Riyadh?
Call between 10:00 AM and 5:00 PM AST — that maps to 9:00 AM–4:00 PM CAT and keeps both parties inside the working day.
Which is behind, Riyadh or CAT?
Riyadh is 1 hour behind CAT. When it is 12:00 PM in Riyadh it is 11:00 AM in CAT.
Do Riyadh and CAT use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while CAT uses CAT at UTC+02:00. The IANA identifiers are Asia/Riyadh and Africa/Harare.
Does daylight saving time affect the Riyadh–CAT difference?
Neither zone observes daylight saving time, so the -1h offset between Riyadh and CAT is fixed all year.
Which other cities share Riyadh's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Riyadh's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Riyadh and CAT?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between Riyadh and CAT?
CAT is -1h from Riyadh.
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 timezone is CAT in?
CAT operates on its local timezone.
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 AST (Arabia Standard Time)?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Does AST observe daylight saving time?
No, AST does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about AST?
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.
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 Riyadh, what time is it in CAT?
When it is 12:00 AM (midnight) in Riyadh (AST), it is -1h later in CAT (CAT).
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