Ottawa to London Time Converter
London is +5h ahead of Ottawa
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FROM
Ottawa
Canada
UTC-04:00
TO
London
United Kingdom
UTC+01:00
Date-aware conversion
Convert a specific date and time
Result
Wed, May 27, 2026 04:11
Ottawa: Tuesday, May 26, 2026 11:11 PM EDT to London: Wednesday, May 27, 2026 4:11 AM GMT+1.
London is 5h ahead of Ottawa on this date
24-Hour Comparison
Every hour in Ottawa and the corresponding time in London. Green rows indicate business hours in London.
Time zones
Ottawa uses America/Toronto (EDT) and London uses Europe/London (GMT+1). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in London. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
Best time for Ottawa and London
The easiest overlap starts around 9:00 AM and runs through 12:00 PM in the source city, while the destination city is also inside normal working hours. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
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City context
About these cities
About Ottawa
Ottawa is located in Canada (North America). It uses the America/Toronto timezone with a standard offset of UTC-04:00. It observes DST, switching between EST and EDT. See the full Ottawa time page for live clock and planning details.
About London
London is located in United Kingdom (Europe). It uses the Europe/London timezone with a standard offset of UTC+01:00. It observes DST, switching between GMT and BST. See the full London time page for live clock and planning details.
Frequently Asked Questions
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