Central European Time (cet) is used in France. The IANA timezone identifier is Europe/Paris.

Arabia Standard Time (ast) is used in Saudi Arabia. The IANA timezone identifier is Asia/Riyadh.

CET to AST Time Converter

Central European Time → Arabia Standard Time

CET = UTC+2AST = UTC+3

⚠️ AST is ambiguous — on this page it means Arabia Standard Time. It also refers to:

CET → Atlantic Standard Time (Halifax) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

AST (Riyadh)

Saudi Arabia · +1h

10:00

London

United Kingdom · -1h

08:00

New York

USA · -6h

03:00

Tokyo

Japan · +7h

16:00

Dubai

United Arab Emirates · +2h

11:00

CET (Paris) ↔ AST (Riyadh) — time offset

CET (Paris) is 1 hour behind AST (Riyadh). Midday in CET (Paris) lines up with 13:00 in AST (Riyadh).

CET (Paris) observes Europe/Paris and AST (Riyadh) observes Asia/Riyadh — a 1 hour gap between them.

Mutual working hours

There is a 7-hour window each day where both CET (Paris) and AST (Riyadh) are within standard business hours (09:00–17:00).

00:0006:0012:0018:0024:00

CET (Paris)

AST (Riyadh)

Overlap (7h)

Optimal meeting slots

CET (Paris) and AST (Riyadh) share 7 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

09:00 Paris / 10:00 Riyadh✓ Both working

10:00 Paris / 11:00 Riyadh✓ Both working

11:00 Paris / 12:00 Riyadh✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Upcoming public holidays

CET (Paris)5 holidays

Jul 14Bastille Day

Aug 15Assumption Day

Nov 1All Saints' Day

Nov 11Armistice Day

Dec 25Christmas Day

AST (Riyadh)

No upcoming public holidays this year.

How to work with CET (Paris) and AST (Riyadh) time zones

Coordinating between CET (Paris) (France) and AST (Riyadh) (Saudi Arabia) means working around a 1-hour time difference. The 7-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 How to schedule across these time zones

✅

Schedule at 09:00–10:00 (CET (Paris)) for a 10:00–11:00 slot in AST (Riyadh) — the sweet spot where both teams are working.

✅

Schedule at 10:00–11:00 (CET (Paris)) for a 11:00–12:00 slot in AST (Riyadh) — the sweet spot where both teams are working.

✅

Schedule at 11:00–12:00 (CET (Paris)) for a 12:00–13:00 slot in AST (Riyadh) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any CET (Paris) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

CET (Paris) ↔ AST (Riyadh)

7h of business hours overlap daily (09:00–17:00)

CET (Paris)

AST (Riyadh)

00:00

01:00

02:00

03:00

04:00

05:00

06:00

07:00

08:00

09:00Working

10:00Working

11:00Working

12:00Working

13:00Working

14:00Working

15:00Working

16:00Working

17:00off

17:00

18:00

19:00

20:00

21:00

22:00

23:00

00:00+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between cet and ast?

Central European Time (cet) is UTC+2 and Arabia Standard Time (ast) is UTC+3. The difference between them is 1 hours.

Where is cet used?

Central European Time (cet) is used in France and surrounding regions. The IANA timezone identifier is Europe/Paris.

Where is ast used?

Arabia Standard Time (ast) is used in Saudi Arabia and surrounding regions. The IANA timezone identifier is Asia/Riyadh. Note: ast is ambiguous and may refer to other timezones.

How do I convert cet to ast?

Use the interactive converter above. Drag the time slider to any cet time and the ast equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular CET conversions

CET → London CET → New York CET → Tokyo CET → Dubai CET → Sydney CET → Berlin CET → Singapore CET → Los Angeles CET → Toronto CET → Mumbai

Popular AST conversions

London → AST New York → AST Tokyo → AST Dubai → AST Sydney → AST Paris → AST Berlin → AST Singapore → AST Los Angeles → AST Toronto → AST