Back to map

Time Difference: Ottawa to Sydney

🇨🇦OttawaUTC-5
vs
🇦🇺SydneyUTC+10
🇨🇦
Ottawa, Canada
Fri, Oct 9
🇦🇺
Sydney, Australia
Fri, Oct 9

Click a time to convert

Time Difference
15 hours
Sydney is 15 hours ahead of Ottawa
Compare on map
🇨🇦
Ottawa
View city page
🇦🇺
Sydney
View city page

Ottawa vs Sydney timezone guide

Ottawa (Canada) uses the America/Toronto timezone at UTC-5, while Sydney (Australia) uses Australia/Sydney at UTC+10. This means Sydney is 15 hours ahead of Ottawa (based on standard offsets — the live difference above accounts for daylight saving time).

Best meeting times between Ottawa and Sydney

Standard 9-to-5 working hours in Ottawa and Sydney do not overlap. To meet synchronously, one side will need to start early or stay late — see the hour-by-hour planner below for the least disruptive options.

Hour-by-hour planner

OttawaSydneyStatus
6am9pmOttawa early, Sydney evening
7am10pmOttawa early, Sydney late evening
8am11pmOttawa early, Sydney late evening
9am12amOttawa working hours, Sydney asleep
10am1amOttawa working hours, Sydney asleep
11am2amOttawa working hours, Sydney asleep
12pm3amOttawa working hours, Sydney asleep
1pm4amOttawa working hours, Sydney asleep
2pm5amOttawa working hours, Sydney asleep
3pm6amOne side outside 9-to-5 but still awake
4pm7amOne side outside 9-to-5 but still awake
5pm8amOttawa evening, Sydney early
6pm9amOne side outside 9-to-5 but still awake
7pm10amOne side outside 9-to-5 but still awake
8pm11amOne side outside 9-to-5 but still awake
9pm12pmOne side outside 9-to-5 but still awake
10pm1pmOttawa late evening, Sydney working hours

Green = standard working hours (9 AM – 5 PM). Amber = early (6–9 AM). Orange = evening (5–10 PM). Grey = asleep or late.

Daylight saving time between Ottawa and Sydney

Both cities observe daylight saving time, but on different schedules. This creates short windows each year where the usual difference of 14 hours behind temporarily shifts.

  • Dec 31 → Mar 8Difference temporarily 16 hours behind.
  • Mar 8 → Apr 4Difference temporarily 15 hours behind.
  • Oct 3 → Nov 1Difference temporarily 15 hours behind.
  • Nov 1 → Dec 31Difference temporarily 16 hours behind.

Ottawa transitions on March 8, 2026 and November 1, 2026. Sydney transitions on April 5, 2026 and October 4, 2026.

Distance between Ottawa and Sydney

Great-circle distance
15,864 km
Direct flight time
~19h 40m

Ottawa and Sydney are 15,864 km apart along the great-circle route. A direct flight takes roughly ~19h 40m, depending on aircraft type, winds, and routing.

More comparisons

Ottawa to New YorkOttawa to LondonOttawa to TokyoSydney to New YorkSydney to LondonSydney to TokyoSydney to Dubai

Frequently asked questions

What is the time difference between Ottawa and Sydney?
The current time difference is 15 hours. Ottawa is currently 15 hours behind Sydney.
Is Ottawa ahead of Sydney?
No. Ottawa is currently 15 hours behind Sydney.
What time is it in Sydney when it's 9 AM in Ottawa?
When it's 9 AM in Ottawa, it's 12am in Sydney.
When is the best time to schedule a meeting between Ottawa and Sydney?
Standard 9-to-5 working hours in Ottawa and Sydney do not overlap. To meet synchronously, one side will need to start before 9 AM or work past 5 PM — see the planner above for the least disruptive options.
Do Ottawa and Sydney observe daylight saving time?
Ottawa and Sydney both observe daylight saving time, but on different schedules. Short windows each year (a week or two around each set of transitions) produce a temporarily different offset.
How far apart are Ottawa and Sydney?
Ottawa and Sydney are 15,864 km apart along the great-circle route. A direct flight takes roughly 19 hours 40 minutes.