AST to EST Time Converter
Use this AST to EST time converter to compare Canada and US East Coast time instantly. EST is 1 hour behind AST, so 9:00 AM AST becomes 8:00 AM EST and 5:00 PM AST becomes 4:00 PM EST. 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 EST Quick Facts
Use this AST to EST converter to compare Canada and US East Coast time, check the 1 hour gap, and confirm the right slot for calls, handoffs, and deadlines. Good overlap starts around 10:00 AM AST / 9:00 AM EST.
How to Convert AST to EST
Converting between Atlantic Standard Time and Eastern Standard Time means accounting for a 1 hour 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 Eastern Standard Time (UTC -5) time appears immediately. Since EST is 1 hour behind of AST, most daytime conversions stay on the same calendar day.
Click "Copy Time" to grab the EST 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 EST Converter
When someone in Canada suggests 10:00 AM AST, that's 9:00 AM EST. 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 EST because of the 1 hour 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–EST 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 EST so you know exactly when to tune in — with a 1 hour difference, a morning event in Canada falls during work hours in United States.
AST to EST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Atlantic Standard Time to Eastern Standard Time full day schedule
| Atlantic Standard Time | Eastern Standard Time |
|---|---|
| 12:00 AM |
11:00 PM
(previous day)
|
| 1:00 AM |
12:00 AM
|
| 2:00 AM |
1:00 AM
|
| 3:00 AM |
2:00 AM
|
| 4:00 AM |
3:00 AM
|
| 5:00 AM |
4:00 AM
|
| 6:00 AM |
5:00 AM
|
| 7:00 AM |
6:00 AM
|
| 8:00 AM |
7:00 AM
|
| 9:00 AM |
8:00 AM
|
| 10:00 AM |
9:00 AM
|
| 11:00 AM |
10:00 AM
|
| 12:00 PM |
11:00 AM
|
| 1:00 PM |
12:00 PM
|
| 2:00 PM |
1:00 PM
|
| 3:00 PM |
2:00 PM
|
| 4:00 PM |
3:00 PM
|
| 5:00 PM |
4:00 PM
|
| 6:00 PM |
5:00 PM
|
| 7:00 PM |
6:00 PM
|
| 8:00 PM |
7:00 PM
|
| 9:00 PM |
8:00 PM
|
| 10:00 PM |
9:00 PM
|
| 11:00 PM |
10:00 PM
|
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Convert Other Time Zones to EST
Find the time difference from any major zone into Eastern Standard Time. Use these pages when scheduling with United States from a different region.