AST to BST Time Converter
Use this AST to BST time converter to compare Canada and United Kingdom time instantly. BST is 5 hours ahead of AST, so 9:00 AM AST becomes 2:00 PM BST and 5:00 PM AST becomes 10:00 PM BST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
AST to BST Quick Facts
Use this AST to BST converter to compare Canada and United Kingdom time, check the 5 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 9:00 AM AST / 2:00 PM BST.
How to Convert AST to BST
Converting between Atlantic Standard Time and British Summer Time means accounting for a 5 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Atlantic Standard Time (UTC -4) that you want to convert. Hit "Now" to load the current AST time instantly, or use "+1h" to step forward and compare.
The equivalent British Summer Time (UTC +1) time appears immediately. Since BST is 5 hours ahead of AST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the BST 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 AST to BST Converter
When someone in Canada suggests 9:00 AM AST, that's 2:00 PM BST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night AST times can land on a different date in BST 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.
Daylight Saving adjustments can widen or narrow the AST–BST 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.
Product launches, sports matches, and webinars are often announced in AST. Convert the event time to BST so you know exactly when to tune in — with a 5 hours difference, a morning event in Canada falls during work hours in United Kingdom.
AST to BST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Atlantic Standard Time to British Summer Time full day schedule
| Atlantic Standard Time | British Summer Time |
|---|---|
| 12:00 AM |
5:00 AM
|
| 1:00 AM |
6:00 AM
|
| 2:00 AM |
7:00 AM
|
| 3:00 AM |
8:00 AM
|
| 4:00 AM |
9:00 AM
|
| 5:00 AM |
10:00 AM
|
| 6:00 AM |
11:00 AM
|
| 7:00 AM |
12:00 PM
|
| 8:00 AM |
1:00 PM
|
| 9:00 AM |
2:00 PM
|
| 10:00 AM |
3:00 PM
|
| 11:00 AM |
4:00 PM
|
| 12:00 PM |
5:00 PM
|
| 1:00 PM |
6:00 PM
|
| 2:00 PM |
7:00 PM
|
| 3:00 PM |
8:00 PM
|
| 4:00 PM |
9:00 PM
|
| 5:00 PM |
10:00 PM
|
| 6:00 PM |
11:00 PM
|
| 7:00 PM |
12:00 AM
(next day)
|
| 8:00 PM |
1:00 AM
(next day)
|
| 9:00 PM |
2:00 AM
(next day)
|
| 10:00 PM |
3:00 AM
(next day)
|
| 11:00 PM |
4:00 AM
(next day)
|
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Convert Other Time Zones to BST
Find the time difference from any major zone into British Summer Time. Use these pages when scheduling with United Kingdom from a different region.