Offset
The time difference between Istanbul and Calgary is 9 hours.
Istanbul (TRT) is ahead of Calgary (MDT).
TRT: UTC+3
MDT: UTC-6
Calgary is currently observing daylight saving time; Istanbul is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Istanbul and Calgary don't overlap on the same weekday. Calgary is 9 hours behind Istanbul.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in Istanbul (7 AM–11 AM in Calgary) — suggest 6:00 PM Istanbul (9:00 AM Calgary).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Turkey
- New Year's DayThu, Jan 1
- National Independence & Children's DayThu, Apr 23
- Labour DayFri, May 1
- Atatürk Commemoration & Youth DayTue, May 19
- Democracy and National Unity DayWed, Jul 15
- Victory DaySun, Aug 30
- Republic DayThu, Oct 29
Canada
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Victoria DayMon, May 18
- Canada DayWed, Jul 1
- Labour DayMon, Sep 7
- National Day for Truth and ReconciliationWed, Sep 30
- ThanksgivingMon, Oct 12
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Istanbul | Calgary | Day |
|---|---|---|
| 12:00 am | 3:00 pm | -1 day |
| 1:00 am | 4:00 pm | -1 day |
| 2:00 am | 5:00 pm | -1 day |
| 3:00 am | 6:00 pm | -1 day |
| 4:00 am | 7:00 pm | -1 day |
| 5:00 am | 8:00 pm | -1 day |
| 6:00 am | 9:00 pm | -1 day |
| 7:00 am | 10:00 pm | -1 day |
| 8:00 am | 11:00 pm | -1 day |
| 9:00 am | 12:00 am | Same day |
| 10:00 am | 1:00 am | Same day |
| 11:00 am | 2:00 am | Same day |
| 12:00 pm | 3:00 am | Same day |
| 1:00 pm | 4:00 am | Same day |
| 2:00 pm | 5:00 am | Same day |
| 3:00 pm | 6:00 am | Same day |
| 4:00 pm | 7:00 am | Same day |
| 5:00 pm | 8:00 am | Same day |
| 6:00 pm | 9:00 am | Same day |
| 7:00 pm | 10:00 am | Same day |
| 8:00 pm | 11:00 am | Same day |
| 9:00 pm | 12:00 pm | Same day |
| 10:00 pm | 1:00 pm | Same day |
| 11:00 pm | 2:00 pm | Same day |
Daylight saving time
Calgary observes daylight saving time; Istanbul does not. The offset between the two zones changes when Calgary transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:36 PM
- Day length
- 15h 4m
- Sunrise
- 5:23 AM
- Sunset
- 9:50 PM
- Day length
- 16h 27m
Daylight overlap: 6h 13m — 2:23 PM–8:36 PM in Istanbul (5:23 AM–11:36 AM in Calgary). Both locations are in daylight during this window.
Cities in these zones
Other cities in Turkey Time
Other cities in Mountain Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Airports in Mountain Time
- YYC
- YEG
Related conversions
Common conversions
- What is 9:00 am Istanbul in Calgary?
- 9:00 am Istanbul is 12:00 am Calgary.
- What is 12:00 pm Istanbul in Calgary?
- 12:00 pm Istanbul is 3:00 am Calgary.
- What is 12:30 pm Istanbul in Calgary?
- 12:30 pm Istanbul is 3:30 am Calgary.
- What is 2:00 pm Istanbul in Calgary?
- 2:00 pm Istanbul is 5:00 am Calgary.
- What is 5:00 pm Istanbul in Calgary?
- 5:00 pm Istanbul is 8:00 am Calgary.
- What is 11:30 pm Istanbul in Calgary?
- 11:30 pm Istanbul is 2:30 pm Calgary.