Calgary to Seattle Time Difference
Seattle is 1 hour behind Calgary. When it's 10:26:15 AM in Calgary, it's 09:26:15 AM in Seattle.
How Many Hours Behind Is Seattle From Calgary?
Seattle is 1 hour behind Calgary. So Calgary is 1 hour ahead of Seattle looking the other way — the same gap, described from the other end.
In practice that means a working day in Calgary starts when it is already 8:00 AM in Seattle. The gap is not fixed all year: it becomes 2 hours on Sunday, November 1, 2026, when Calgary changes its clocks.
Best Time to Call Calgary and Seattle
Both cities are inside normal business hours between 10:00 AM and 5:00 PM in Calgary — that's 9:00 AM to 4:00 PM in Seattle. That's a 7-hour window, so a call fits comfortably in either side's working day.
both at work Calgary only Seattle only neither — hours shown along the strip are Calgary local time.
Convert a Specific Time
Pick any date and time in Calgary to see the exact equivalent in Seattle.
Common Times Converted
Calgary time on the left, Seattle time on the right.
Calgary to Seattle: Full 24-Hour Conversion Table
Based on today, Sunday, October 11, 2026 in Calgary. Shaded rows are working hours; the darker shade marks the hours when both cities are at work.
| Calgary | Seattle | Working hours |
|---|---|---|
| 12:00 AM | 11:00 PM prev 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 | Calgary only |
| 10:00 AM | 9:00 AM | Both cities |
| 11:00 AM | 10:00 AM | Both cities |
| 12:00 PM | 11:00 AM | Both cities |
| 1:00 PM | 12:00 PM | Both cities |
| 2:00 PM | 1:00 PM | Both cities |
| 3:00 PM | 2:00 PM | Both cities |
| 4:00 PM | 3:00 PM | Both cities |
| 5:00 PM | 4:00 PM | Seattle only |
| 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 | — |
Understanding the Calgary – Seattle Time Difference
Calgary runs on America/Edmonton, currently MDT (UTC-6:00). Seattle runs on America/Los_Angeles, currently PDT (UTC-7:00). The gap of 1 hour is simply the distance between those two offsets.
Both cities observe Daylight Saving Time, but they don't switch on the same date — so for a few weeks each year the gap between them is different again. The next shift is on Sunday, November 1, 2026, when Calgary adjusts its clocks and the difference becomes 2 hours. Anything scheduled across that date needs checking again.
Full clock-change dates: Daylight Saving Time in Canada · Daylight Saving Time in the United States.
Calgary today
Seattle today
Frequently Asked Questions
What is the time difference between Calgary and Seattle?
Seattle is currently 1 hour behind Calgary. That gap becomes 2 hours on Sunday, November 1, 2026, when Calgary changes its clocks.
How many hours behind is Seattle from Calgary?
Seattle is 1 hour behind Calgary. Looking at it the other way, Calgary is 1 hour ahead of Seattle.
What time is it in Seattle when it is 9:00 AM in Calgary?
When it is 9:00 AM in Calgary, it is 8:00 AM in Seattle.
Is Seattle ahead of or behind Calgary?
Seattle is 1 hour behind Calgary. Calgary reaches each point in the day first, so Seattle is still getting started while the Calgary working day is finishing.
What is the best time to call between Calgary and Seattle?
Between 10:00 AM and 5:00 PM Calgary time, which is 9:00 AM to 4:00 PM in Seattle. Both cities are inside normal business hours during that window.
Does the time difference between Calgary and Seattle change during the year?
Yes. Both cities observe Daylight Saving Time, and they do not always switch on the same date, so the gap between them shifts during the year. It changes to 2 hours on Sunday, November 1, 2026.
What time zones are Calgary and Seattle in?
Calgary uses the America/Edmonton time zone, currently MDT (UTC-6:00). Seattle uses America/Los_Angeles, currently PDT (UTC-7:00).