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CET to AST Time Converter

Use this CET to AST time converter to compare Central Europe and Canada time instantly. AST is 5 hours behind CET, so 9:00 AM CET becomes 4:00 AM AST and 5:00 PM CET becomes 12:00 PM AST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.

CET Central European Time
...
AST Atlantic Standard Time
...
Select a time to convert

CET to AST Quick Facts

Use this CET to AST converter to compare Central Europe and Canada time, check the 5 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 2:00 PM CET / 9:00 AM AST.

Time Difference
Atlantic Standard Time is 5 hours behind Central European Time
Useful when deadlines, handoffs, or calls cross workday boundaries.
Best Call Window
Best overlap starts around 2:00 PM CET and 9:00 AM AST.
Common Use Cases
Useful for remote teams, customer support windows, travel planning, webinars, and same-day deadline handoffs.

How to Convert CET to AST

Converting between Central European Time and Atlantic Standard Time means accounting for a 5 hours gap — here's how to do it in under 10 seconds with no sign-up.

Enter Your CET Time

Pick the date and time in Central European Time (UTC +1) that you want to convert. Hit "Now" to load the current CET time instantly, or use "+1h" to step forward and compare.

Read the AST Result

The equivalent Atlantic Standard Time (UTC -4) time appears immediately. Since AST is 5 hours behind of CET, most daytime conversions stay on the same calendar day.

Copy or Fine-Tune

Click "Copy Time" to grab the AST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.

Why Choose Our CET to AST Converter

Align CET–AST Meetings Instantly

When someone in Central Europe suggests 2:00 PM CET, that's 9:00 AM AST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.

Spot Date-Line Shifts at a Glance

Late-night CET times can land on a different date in AST because of the 5 hours offset. The converter labels "next day" or "previous day" next to the result so you never send a message a day early or miss a deadline.

Handles DST Transitions Automatically

Daylight Saving adjustments can widen or narrow the CET–AST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.

Never Miss a CET-Timed Event

Product launches, sports matches, and webinars are often announced in CET. Convert the event time to AST so you know exactly when to tune in — with a 5 hours difference, a morning event in Central Europe falls during work hours in Canada.

CET to AST Time Conversion Chart

Quick-reference conversion table covering every hour of the day at a glance.

Complete 24-Hour Conversion

Central European Time to Atlantic Standard Time full day schedule

12:00 AM
CET
7:00 PM
AST
(previous day)
1:00 AM
CET
8:00 PM
AST
(previous day)
2:00 AM
CET
9:00 PM
AST
(previous day)
3:00 AM
CET
10:00 PM
AST
(previous day)
4:00 AM
CET
11:00 PM
AST
(previous day)
5:00 AM
CET
12:00 AM
AST
6:00 AM
CET
1:00 AM
AST
7:00 AM
CET
2:00 AM
AST
8:00 AM
CET
3:00 AM
AST
9:00 AM
CET
4:00 AM
AST
10:00 AM
CET
5:00 AM
AST
11:00 AM
CET
6:00 AM
AST
12:00 PM
CET
7:00 AM
AST
1:00 PM
CET
8:00 AM
AST
2:00 PM
CET
9:00 AM
AST
3:00 PM
CET
10:00 AM
AST
4:00 PM
CET
11:00 AM
AST
5:00 PM
CET
12:00 PM
AST
6:00 PM
CET
1:00 PM
AST
7:00 PM
CET
2:00 PM
AST
8:00 PM
CET
3:00 PM
AST
9:00 PM
CET
4:00 PM
AST
10:00 PM
CET
5:00 PM
AST
11:00 PM
CET
6:00 PM
AST