Seattle is 2 hours behind Calgary in winter and 1 hour behind in summer. Updated for the 2026 time zone changes and current daylight saving rules.
| Starting | Seattle is | Calgary / Seattle |
|---|---|---|
| Nov 1, 2026 | 2 hours behind | UTC−6 / UTC−8 |
| Mar 14, 2027 Seattle springs forward | 1 hour behind | UTC−6 / UTC−7 |
| Nov 7, 2027 Seattle falls back | 2 hours behind | UTC−6 / UTC−8 |
Alberta Time. UTC−6 all year. Alberta stopped changing its clocks on Nov 1, 2026.
Pacific Time. UTC−8 in winter and UTC−7 from the second Sunday in March to the first Sunday in November.
Winter: A 9-to-5 workday overlaps for 6 hours: 11:00 AM to 5:00 PM in Calgary, which is 9:00 AM to 3:00 PM in Seattle.
Summer: A 9-to-5 workday overlaps for 7 hours: 10:00 AM to 5:00 PM in Calgary, which is 9:00 AM to 4:00 PM in Seattle.
Seattle is 2 hours behind Calgary in winter and 1 hour behind in summer.
Calgary uses Alberta Time: UTC−6 all year. Alberta stopped changing its clocks on Nov 1, 2026. Seattle uses Pacific Time: UTC−8 in winter and UTC−7 from the second Sunday in March to the first Sunday in November.
In winter: A 9-to-5 workday overlaps for 6 hours: 11:00 AM to 5:00 PM in Calgary, which is 9:00 AM to 3:00 PM in Seattle. In summer: A 9-to-5 workday overlaps for 7 hours: 10:00 AM to 5:00 PM in Calgary, which is 9:00 AM to 4:00 PM in Seattle.