403 area code
Area code 403 is in Alberta, Canada, including Calgary, Lethbridge, Medicine Hat and Red Deer. It's on Mountain Time.
Mountain Time
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Is it a good time to call 403?
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Business hours are taken as 9 AM to 5 PM on weekdays. US telemarketing rules only allow sales calls between 8 AM and 9 PM local time.
Cities in area code 403
| City | Time zone |
|---|---|
| Calgary, AB | Mountain Time |
| Lethbridge, AB | Mountain Time |
| Medicine Hat, AB | Mountain Time |
| Red Deer, AB | Mountain Time |
| Airdrie, AB | Mountain Time |
| Brooks, AB | Mountain Time |
| High River, AB | Mountain Time |
| Canmore, AB | Mountain Time |
| Banff, AB | Mountain Time |
| Rocky Mountain House, AB | Mountain Time |
| Cochrane, AB | Mountain Time |
| Strathmore, AB | Mountain Time |
Other area codes in Alberta
More: look up another area code · time zone converter · US time zones map
Questions people ask
Where is area code 403?
Area code 403 is in Alberta, Canada, including Calgary, Lethbridge, Medicine Hat and Red Deer.
What time zone is area code 403?
403 is on Mountain Time (UTC−7, UTC−6 in summer).
What time is it in area code 403 right now?
The live clock at the top of this page shows the current local time in area code 403.