CET/CEST to AST/ADT time converter

AST/ADT is 5 hours behind CET/CEST. When it is 9:00 AM in CET/CEST, it is 4:00 AM in AST/ADT.

CET/CEST CEST

Friday, October 16, 2026

AST/ADT ADT

Friday, October 16, 2026

CET/CEST
Central European Time
Fri, Oct 16
CESTUTC+2
AST/ADT
Atlantic Standard Time
Fri, Oct 16
ADTUTC-3-5h
Finding your time zone…
Shared working hours (9:00–18:00)

CET/CEST to AST/ADT conversion table

Every hour of today in CET/CEST and the matching time in AST/ADT. Light rows are typical working hours (9:00–18:00).

CET/CESTAST/ADT
12:00 AM7:00 PM−1 day
1:00 AM8:00 PM−1 day
2:00 AM9:00 PM−1 day
3:00 AM10:00 PM−1 day
4:00 AM11:00 PM−1 day
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Best time to call or meet

Both sides are at work from 2:00 PM – 6:00 PM in CET/CEST (9:00 AM – 1:00 PM in AST/ADT).

Daylight saving time and the difference

The difference changes during the year because CET/CEST and AST/ADT switch clocks on different dates:

  • Oct 16, 2026 – Oct 25, 2026: -5h
  • Oct 25, 2026 – Nov 1, 2026: -4h
  • Nov 1, 2026 – Mar 14, 2027: -5h
  • Mar 14, 2027 – Mar 28, 2027: -4h
  • Mar 28, 2027 – Oct 16, 2027: -5h

More conversions

AST to CETCET to UTCCET to GMTCET to ESTCET to CSTCET to MSTCET to PSTCET to MSKCET to GSTCET to PKTCET to ISTCET to SGTCET to PHT
UTC to ASTGMT to ASTEST to ASTCST to ASTMST to ASTPST to ASTMSK to ASTGST to ASTPKT to ASTIST to ASTSGT to ASTPHT to AST

Questions and answers

What is the time difference between CET/CEST and AST/ADT?

AST/ADT is 5 hours behind CET/CEST.

What time is it in AST/ADT when it is 9 AM in CET/CEST?

When it is 9:00 AM in CET/CEST, it is 4:00 AM in AST/ADT.

When is the best time to call AST/ADT from CET/CEST?

Both sides are at work from 2:00 PM – 6:00 PM in CET/CEST (9:00 AM – 1:00 PM in AST/ADT).

Does the time difference between CET/CEST and AST/ADT change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.