CET to AST time converter
Enter a time in CET to get the matching time in AST, whether it falls on the next or previous day, and a full 24-hour table. Handy for planning calls between Paris and Berlin and Riyadh, Kuwait and Doha.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter time in cet and day in cet (optional).
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
AST time = CET time + 2 hours, because AST is UTC+3 and CET is UTC+1. If the result reaches 24:00 or more, subtract 24 hours and move to the next day; if it drops below 00:00, add 24 hours and move to the previous day.
Example
Inputs: Time in CET = 22:00, Day in CET (optional) = Thursday. Result: Time in AST: 00:00; Day change: Next day (+1); Offset difference (AST minus CET): 2 hours.
Limits and caveats
- Fixed offsets are used: CET = UTC+1 and AST = UTC+3, whatever the date.
- Paris and Berlin switch to CEST (UTC+2) from the last Sunday of March to the last Sunday of October; the tool does not apply that change.
- AST here is Arabia Standard Time (UTC+3), not Atlantic Standard Time (UTC-4).
Questions about this tool
What time is 09:00 CET in AST?
09:00 CET is 11:00 AST on the same day, because AST is 2 hours ahead of CET.
Does daylight saving time change the result?
The tool keeps CET at UTC+1 all year. Paris and Berlin switch to CEST (UTC+2) from the last Sunday of March to the last Sunday of October; in that period the gap between Paris and AST is 1 hours.
Is AST here Atlantic Standard Time?
No. Here AST means Arabia Standard Time, UTC+3, used in Riyadh, Kuwait, Doha, Manama and Baghdad. Atlantic Standard Time, used in Puerto Rico and Halifax, is UTC-4.