Time Difference: London to Ottawa
Click a time to convert
London vs Ottawa timezone guide
London (UK) uses the Europe/London timezone at UTC+0, while Ottawa (Canada) uses America/Toronto at UTC-5. This means Ottawa is 5 hours behind London (based on standard offsets — the live difference above accounts for daylight saving time).
Best meeting times between London and Ottawa
Standard 9-to-5 working hours overlap by 3 hours per day. The shared window is 2pm–5pm in London, which is 9am–12pm in Ottawa. Schedule recurring meetings inside that window and both teams stay inside standard working hours.
Hour-by-hour planner
| London | Ottawa | Status |
|---|---|---|
| 6am | 1am | London early, Ottawa asleep |
| 7am | 2am | London early, Ottawa asleep |
| 8am | 3am | London early, Ottawa asleep |
| 9am | 4am | London working hours, Ottawa asleep |
| 10am | 5am | London working hours, Ottawa asleep |
| 11am | 6am | One side outside 9-to-5 but still awake |
| 12pm | 7am | One side outside 9-to-5 but still awake |
| 1pm | 8am | One side outside 9-to-5 but still awake |
| 2pm | 9am | Both at work — ideal meeting time |
| 3pm | 10am | Both at work — ideal meeting time |
| 4pm | 11am | Both at work — ideal meeting time |
| 5pm | 12pm | One side outside 9-to-5 but still awake |
| 6pm | 1pm | One side outside 9-to-5 but still awake |
| 7pm | 2pm | One side outside 9-to-5 but still awake |
| 8pm | 3pm | One side outside 9-to-5 but still awake |
| 9pm | 4pm | One side outside 9-to-5 but still awake |
| 10pm | 5pm | London late evening, Ottawa evening |
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 London and Ottawa
Both cities observe daylight saving time, but on different schedules. This creates short windows each year where the usual difference of 5 hours ahead temporarily shifts.
- Mar 8 → Mar 29Difference temporarily 4 hours ahead.
- Oct 25 → Nov 1Difference temporarily 4 hours ahead.
London transitions on March 29, 2026 and October 25, 2026. Ottawa transitions on March 8, 2026 and November 1, 2026.
Distance between London and Ottawa
London and Ottawa are 5,361 km apart along the great-circle route. A direct flight takes roughly ~7h 18m, depending on aircraft type, winds, and routing.