BST to AST Time Converter
Use this BST to AST time converter to compare United Kingdom and Canada time instantly. AST is 5 hours behind BST, so 9:00 AM BST becomes 4:00 AM AST and 5:00 PM BST 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.
BST to AST Quick Facts
Use this BST to AST converter to compare United Kingdom 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 BST / 9:00 AM AST.
How to Convert BST to AST
Converting between British Summer 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.
Pick the date and time in British Summer Time (UTC +1) that you want to convert. Hit "Now" to load the current BST time instantly, or use "+1h" to step forward and compare.
The equivalent Atlantic Standard Time (UTC -4) time appears immediately. Since AST is 5 hours behind of BST, most daytime conversions stay on the same calendar day.
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 BST to AST Converter
When someone in United Kingdom suggests 2:00 PM BST, that's 9:00 AM AST. This converter shows the overlap so both sides agree on one slot — no back-and-forth.
Late-night BST 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.
Daylight Saving adjustments can widen or narrow the BST–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.
Product launches, sports matches, and webinars are often announced in BST. Convert the event time to AST so you know exactly when to tune in — with a 5 hours difference, a morning event in United Kingdom falls during work hours in Canada.
BST to AST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
British Summer Time to Atlantic Standard Time full day schedule
| British Summer Time | Atlantic Standard Time |
|---|---|
| 12:00 AM |
7:00 PM
(previous day)
|
| 1:00 AM |
8:00 PM
(previous day)
|
| 2:00 AM |
9:00 PM
(previous day)
|
| 3:00 AM |
10:00 PM
(previous day)
|
| 4:00 AM |
11:00 PM
(previous day)
|
| 5:00 AM |
12:00 AM
|
| 6:00 AM |
1:00 AM
|
| 7:00 AM |
2:00 AM
|
| 8:00 AM |
3:00 AM
|
| 9:00 AM |
4:00 AM
|
| 10:00 AM |
5:00 AM
|
| 11:00 AM |
6:00 AM
|
| 12:00 PM |
7:00 AM
|
| 1:00 PM |
8:00 AM
|
| 2:00 PM |
9:00 AM
|
| 3:00 PM |
10:00 AM
|
| 4:00 PM |
11:00 AM
|
| 5:00 PM |
12:00 PM
|
| 6:00 PM |
1:00 PM
|
| 7:00 PM |
2:00 PM
|
| 8:00 PM |
3:00 PM
|
| 9:00 PM |
4:00 PM
|
| 10:00 PM |
5:00 PM
|
| 11:00 PM |
6:00 PM
|
Popular BST Time Converters
Explore more BST conversions for major business and travel corridors. Each page includes a 24-hour chart, time difference summary, and meeting overlap guidance.
Convert Other Time Zones to AST
Find the time difference from any major zone into Atlantic Standard Time. Use these pages when scheduling with Canada from a different region.