Time Difference: London and Toronto
Toronto is 5 hours behind London for most of the year. 3:00 PM in London is 10:00 AM in Toronto, or 11:00 AM in the few weeks when the gap is 4 hours.
London Afternoon, Toronto Morning
In most weeks both teams are inside a 9-to-5 day only from 2:00 to 5:00 PM London time, which is 9:00 AM to 12:00 PM in Toronto. London's morning is too early for Toronto, and once London closes, the Toronto afternoon is quiet on the UK side. If you can only offer one slot, pick something between 2:00 and 4:00 PM London time.
When the Gap Is 4 Hours Instead of 5
Toronto uses Eastern Time (EST, UTC-5, and EDT, UTC-4) and London uses GMT and BST. Ontario changes its clocks on the same dates as the US, the UK on different ones, so two short stretches have only one side on summer time:
| Stretch | Gap |
|---|---|
| Early January to second Sunday in March | 5 hours (both on winter time) |
| Second Sunday to last Sunday in March (2 to 3 weeks) | 4 hours (Toronto on EDT, London still on GMT) |
| Last Sunday in March to last Sunday in October | 5 hours (both on summer time) |
| Last Sunday in October to first Sunday in November (1 week) | 4 hours (London back on GMT, Toronto still on EDT) |
| First Sunday in November to end of year | 5 hours (both on winter time) |
London to Toronto Conversion Table
Each column is one real season of the London-Toronto gap. Pick the column that matches your date.
| 🇬🇧 London (GMT) | 🇨🇦 Toronto (GMT → EST) | 🇨🇦 Toronto (BST → EDT) | 🇨🇦 Toronto (GMT → EDT) |
|---|---|---|---|
| 00:00 | 19:00(prev day) | 19:00(prev day) | 20:00(prev day) |
| 03:00 | 22:00(prev day) | 22:00(prev day) | 23:00(prev day) |
| 06:00 | 01:00 | 01:00 | 02:00 |
| 09:00 | 04:00 | 04:00 | 05:00 |
| 12:00 | 07:00 | 07:00 | 08:00 |
| 15:00 | 10:00 | 10:00 | 11:00 |
| 18:00 | 13:00 | 13:00 | 14:00 |
| 21:00 | 16:00 | 16:00 | 17:00 |
- GMT → EST: first Sunday in November to second Sunday in March, while both are on standard time
- BST → EDT: last Sunday in March to last Sunday in October, while both are on summer time
- GMT → EDT: a few weeks from the second Sunday in March, and about a week from the last Sunday in October, when only Toronto is on summer time
* "next day" / "prev day" = the converted time falls on a different calendar date.
Checking a Recurring Call
1:00 PM in London is 8:00 AM in Toronto most weeks and 9:00 AM in the 4-hour windows. Going the other way, Toronto's 9:00 AM is 2:00 PM in London most weeks.
If you set a London-time series for a Toronto attendee, expect their time to move by an hour in March and again in late October. 2:00 PM London is 9:00 AM in Toronto most weeks and 10:00 AM in the 4-hour windows. Put the Toronto time in the invite as well.
A Weekly 3 PM London Check-In
A weekly check-in at 3:00 PM London time shows how this pair behaves. That's 10:00 AM in Toronto in most weeks and 11:00 AM in the 4-hour windows. If Toronto picks 10:00 AM instead, London joins at 3:00 PM, or 2:00 PM in the short windows.
The weeks to watch are the two or three after the second Sunday in March and the last week of October. In each, one side has moved and the other hasn't, so a fixed London-time series lands an hour later on Toronto's clock.