Time Difference Between Ontario and London
London is 8 hours ahead Ontario.
United States
Ontario
America/Los_Angeles · UTC-7
United Kingdom
London
Europe/London · UTC+1
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Ontario and London.
Ontario
9:00 AM
London
5:00 PM
Ontario to London — 24-Hour Conversion
Each row shows the equivalent local time in London for an hour in Ontario. Working-hours rows (9–18) are highlighted.
| Ontario | London | Match |
|---|---|---|
| Off hours | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Workday in London | ||
| Best for meetings | ||
| Workday in Ontario | ||
| Workday in Ontario | ||
| Workday in Ontario | ||
| Workday in Ontario | ||
| Workday in Ontario | ||
| Workday in Ontario | ||
| +1 day | Workday in Ontario | |
| +1 day | Workday in Ontario | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours | |
| +1 day | Off hours |
Frequently Asked Questions
What is the time difference between Ontario and London?
London, United Kingdom (UTC+1) is 8 hours ahead Ontario, United States (UTC-7).
What is the best time to schedule a meeting between Ontario and London?
The best meeting times overlap when both cities are within standard working hours (9 AM – 6 PM). The full hour-by-hour table on this page lists every overlap window.
Does daylight saving time change the difference between Ontario and London?
Yes — when one city observes daylight saving time and the other does not, the gap shifts by an hour. The conversion table on this page reflects the current offset, including any active DST.
When it is 9 AM in Ontario, what time is it in London?
Use the conversion table on this page — every hour in Ontario is mapped to its equivalent local time in London, including day shift markers when the date differs.