London to Ottawa — Time Difference
Live clocks · Full 24-hour table · United Kingdom → Canada
Time Difference: London vs Ottawa
Ottawa is 5 hours behind London. London is in British Summer Time (GMT+1, UTC+1) and Ottawa is in Eastern Daylight Time (EDT, UTC-4).
Use the table below to find the equivalent Ottawa time for any hour in London. Click any row to see the full conversion page for that hour.
Business Hours — London to Ottawa
"Good" = both cities within business hours (9 AM–5 PM)
Full 24-Hour Table — London to Ottawa
Frequently Asked Questions
What is the time difference between London and Ottawa?
Ottawa is 5 hours behind London. London uses British Summer Time (GMT+1, UTC+1) and Ottawa uses Eastern Daylight Time (EDT, UTC-4).
What time is it in Ottawa when it is 9 AM in London?
9 AM in London (GMT+1) equals 4 AM in Ottawa (EDT).
Is London ahead or behind Ottawa?
Ottawa is 5 hours behind London.
What is the best time to call from London to Ottawa?
The best time to call from London to Ottawa is between 2 PM–5 PM London time, when Ottawa is also within normal working hours (9 AM–5 PM).
Time Zones
London
British Summer Time
GMT+1 · UTC+1
Ottawa
Eastern Daylight Time
EDT · UTC-4
Reverse Conversion
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