Best Time to Call Toronto from London
🕐 Live Timezone Overlap: Toronto & London
Toronto and London sit five hours apart, with London ahead. That gap leaves a narrow but workable window each day: Toronto's morning overlaps with London's afternoon. The key scheduling consideration is that the overlap falls entirely within London's post-lunch hours, from 2pm to 6pm local time, while Toronto participants join from 9am to 1pm. Getting the invite time right matters, because a slip of even one hour can push London colleagues past their working day.
Time Difference: Toronto and London
London is currently 5 hours ahead of Toronto. The live offsets are Toronto UTC-4 and London UTC+1. Toronto observes daylight saving and London also observes daylight saving, so the offset shifts twice a year if both sides aren't already aligned.
Both Toronto and London observe daylight saving time, so the offset shifts twice a year. Currently Toronto is at UTC-4 and London is at UTC+1, giving the five-hour gap. In standard time, Toronto moves to UTC-5 and London to UTC 0, keeping the same five-hour difference. However, UK clocks change one week earlier than North American clocks each autumn, creating a brief period when the gap is only four hours. Plan carefully around those changeover weekends to avoid misfired calendar invites.
Best Times to Meet
The overlap between Toronto and London is 4 hours: 9am to 1pm in Toronto, 2pm to 6pm in London. Inside that 4-hour window, the cleanest slot is typically 9am to 11am Toronto time (2pm to 4pm London). London cultural notes flag that lunch runs from roughly 12:30pm to 1:30pm, so a 2pm London start avoids that break cleanly. After 5pm, London finance teams do hold informal meetings, but for formal calls, keeping London out by 5pm is safer. Toronto's Bay Street crowd is at their desks by 8am, so a 9am start is no hardship.
Working Hours Overlap Explained
Toronto operates on America/Toronto (currently UTC-4). London operates on Europe/London (currently UTC+1). The table below maps a standard 9:00 AM–6:00 PM day in Toronto to London's local time.
| Toronto time | London time | Status |
|---|---|---|
| 9:00 AM | 2:00 PM | London in business hours |
| 10:00 AM | 3:00 PM | London in business hours |
| 11:00 AM | 4:00 PM | London in business hours |
| 12:00 PM | 5:00 PM | London in business hours |
| 1:00 PM | 6:00 PM | London wrapping up |
| 2:00 PM | 7:00 PM | London outside hours |
| 3:00 PM | 8:00 PM | London outside hours |
| 4:00 PM | 9:00 PM | London outside hours |
| 5:00 PM | 10:00 PM | London outside hours |
| 6:00 PM | 11:00 PM | London outside hours |
Tips for Scheduling Across Toronto and London
- Book Toronto-London calls between 9am and 11am Toronto time to keep London comfortably within its afternoon.
- During the autumn clock-change week, the gap briefly drops to four hours: verify your calendar app has updated before sending invites.
- Avoid scheduling on 1 July for Toronto teams: Canada Day is a statutory holiday with no UK equivalent.
- London participants often wind down on Friday afternoons, so Thursday morning Toronto time is the most reliable end-of-week slot.
- Boxing Day, 26 December, is a Toronto statutory holiday: London colleagues may be available, but Toronto will not.
Public Holidays and Working Weeks
Both cities work a standard Monday-to-Friday week with 9am-6pm hours as the default, though most UK office workers tend to wind down earlier on Fridays. Cross-city meetings must account for both holiday calendars. Toronto observes Canada Day on 1 July and Boxing Day on 26 December, neither of which is a US or UK holiday. London's next major public holiday is Christmas Day on 25 December. Check both calendars before scheduling anything close to these dates.