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Time gap

Time differences

Time difference between Toronto and Calgary

Good time for both on a weekday: 11:00–17:00 in Toronto = 9:00–15:00 in Calgary.

 

 

 

  • Everyone at work
  • Work hours
  • Awake
  • Night
  • Weekend

Tap any column to see that moment in every city.

Different hours for each city
  • 2 hoursCalgary behind Toronto
  • UTC−5 / UTC−4Toronto, January / July
  • UTC−7 / UTC−6Calgary, January / July
  • 6 hoursshared 9-to-5 time

How the gap moves through the year

Calgary is 2 hours behind Toronto for about 10 months of the year.

Calgary is 1 hour behind Toronto for about 2 months of the year.

Calgary is 3 hours behind Toronto for about 0 weeks of the year.

The short odd stretches come from the two cities changing their clocks on different weekends.

From the second Sunday in March (when Toronto moves forward), Calgary is 3 hours behind Toronto.

From the first Sunday in November (when Toronto falls back), Calgary is 1 hour behind Toronto.

Toronto moves its clocks forward one hour on the second Sunday in March at 2:00 am local time and back on the first Sunday in November at 2:00 am, switching between Eastern Standard Time (UTC−5) and Eastern Daylight Time (UTC−4).

Calgary changes its clocks on dates that do not follow a fixed weekday rule (Mountain Standard Time / Mountain Daylight Time); check the date before you book.

Next clock change for this pair, as of when this page was built (2026-10-20): Toronto falls back on Sun 1 November 2026.

Everything on this page also holds if you swap Toronto for New York, Havana, Montreal, Philadelphia or Port-au-Prince, or Calgary for Edmonton — those cities follow exactly the same clock all year.

Working hours that overlap

In January, a 9-to-5 day in both cities shares 6 hours: 11:00 am–5:00 pm in Toronto, which is 9:00 am–3:00 pm in Calgary.

July gives exactly the same window.

Across the week

At 9:00 on a Monday morning in Toronto, it is 7:00 am on Monday in Calgary.

Daylight, distance and night calls

Toronto and Calgary are about 2,710 km (1,680 miles) apart and 35° of longitude apart, which by the sun alone would be 2 hours 15 minutes.

Toronto's winter clock runs 18 minutes ahead of the sun, and Calgary's runs 36 minutes ahead of the sun.

In mid-January the sun is up in Toronto from about 7:48 am to 5:05 pm, and the sun is up in Calgary from about 8:33 am to 4:57 pm; both cities are in daylight at the same time for about 6 hours 30 minutes.

In mid-July the sun is up in Toronto from about 5:49 am to 8:58 pm, and the sun is up in Calgary from about 5:38 am to 9:46 pm; both cities are in daylight at the same time for about 13 hours 15 minutes.

Hour-by-hour table and common mistakes — 2 more sections
Each hour in Toronto and the same moment in Calgary, on a Wednesday in January and in July. Shaded: inside 9-to-5 in both.
TorontoCalgary, JanuaryCalgary, July
12:00 am10:00 pm (−1 day)10:00 pm (−1 day)
1:00 am11:00 pm (−1 day)11:00 pm (−1 day)
2:00 am12:00 am12:00 am
3:00 am1:00 am1:00 am
4:00 am2:00 am2:00 am
5:00 am3:00 am3:00 am
6:00 am4:00 am4:00 am
7:00 am5:00 am5:00 am
8:00 am6:00 am6:00 am
9:00 am7:00 am7:00 am
10:00 am8:00 am8:00 am
11:00 am9:00 am9:00 am
12:00 pm10:00 am10:00 am
1:00 pm11:00 am11:00 am
2:00 pm12:00 pm12:00 pm
3:00 pm1:00 pm1:00 pm
4:00 pm2:00 pm2:00 pm
5:00 pm3:00 pm3:00 pm
6:00 pm4:00 pm4:00 pm
7:00 pm5:00 pm5:00 pm
8:00 pm6:00 pm6:00 pm
9:00 pm7:00 pm7:00 pm
10:00 pm8:00 pm8:00 pm
11:00 pm9:00 pm9:00 pm

Common mistakes with Toronto and Calgary

  • Assuming the gap is fixed. Both cities change their clocks, but not on the same weekend, so a recurring meeting can land an hour off for a few weeks.
  • Writing “EST” all year for Toronto. In summer the zone is Eastern Daylight Time; calendar apps handle it, but a typed time in an email can be read the wrong way.

Questions

Is Calgary ahead of Toronto?
Calgary is 2 hours behind Toronto for most of the year.
What is a good time for a meeting between Toronto and Calgary?
With 9-to-5 days in both cities, 11:00 am–5:00 pm Toronto time is inside working hours in both, which gives 6 hours. The window can shift by an hour in the weeks when only one city has changed its clocks.
Does the time difference between Toronto and Calgary change?
Yes. Calgary is 2 hours behind Toronto for about 10 months of the year. Calgary is 1 hour behind Toronto for about 2 months of the year. Calgary is 3 hours behind Toronto for about 0 weeks of the year.

Related time differences

Calgary time zone · Plan with more cities

City names, coordinates and time zone assignments: GeoNames, licensed under CC BY 4.0 (selection and renaming of some cities by this site). Clock times are computed in your browser from the IANA time zone database. Sources and limits.