Toronto to London Time Converter

London is already on the next calendar day from these ET times onward: 7:00 PM for EST → GMT, 7:00 PM for EDT → BST, 8:00 PM for EDT → GMT. For example, 11:00 PM ET is 4:00 AM in London on the next day (EST → GMT).

Abbreviations can be ambiguous here: Toronto switches between ET and EDT across the year, while London switches between GMT and BST. City names and IANA time zones (America/Toronto and Europe/London) are safer for exact scheduling if you're automating anything, since they resolve the right abbreviation automatically instead of needing a manual seasonal check.

If you're running a demo from Toronto, aim for the morning. A 9:00 AM start is 2:00 PM in London on the standard five hour gap, and a 10:00 AM start is 3:00 PM. London's 5:00 PM finish is 12:00 PM in Toronto, so you have until midday.

For a few weeks around the clock changes the gap is four hours. In those weeks the same 9:00 AM Toronto start is 1:00 PM in London, an hour earlier than usual. That happens because Canada moves on the second Sunday in March and the first Sunday in November, while the UK moves on the last Sunday in March and the last Sunday in October.

If you're sending a recurring invite, give the London time in the body of the message as well as the Toronto time. It saves London attendees from guessing which season applies on the day of each call.