Current time in Calgary, Canada
The current local time in Calgary is shown below. Calgary observes MST in winter and MDT during daylight saving time.
Daylight saving time
Sunrise & sunset today
Timezone facts
- Timezone
- America/Edmonton
- Standard abbreviation
- MST
- DST abbreviation
- MDT
- Observes daylight saving
- Yes
- Country
- 🇨🇦 Canada
- Business hours
- 09:00 – 17:00 local
Calgary in context
Calgary sits on the prairie just east of the Rocky Mountain foothills in southern Alberta, the largest city in the province with around 1.3 million residents and a wider metropolitan area of around 1.6 million. The city is positioned at the confluence of the Bow and Elbow rivers, with the downtown skyline rising from the prairie floor and the Rockies forming a permanent backdrop to the west, around 80 kilometres from the city limits.
Timezone history of Calgary
Calgary uses Mountain Time and observes federal DST in line with most of Canada. The Alberta-British Columbia provincial border to the west marks the change to Pacific Time, though a number of small BC communities in the Kootenays observe Mountain Time to align with Alberta business hours. The eastern Alberta-Saskatchewan border produces a sharper inconsistency: Saskatchewan as a whole does not observe DST, so Calgary briefly shares Regina's clock in summer but sits an hour behind in winter.
Working hours in Calgary
Calgary's working economy is dominated by the oil and gas industry, with most of Canada's major petroleum companies headquartered in the downtown core. Office hours typically run 07:30 to 16:30 to overlap with eastern markets, and the energy sector's substantial overlap with Houston and Aberdeen working hours produces early starts even by Mountain Time standards. The Calgary Stampede in early July is a significant single-week business disruption, with many offices operating on reduced hours.