London to Toronto Time

London to Toronto conversion chart

Every full hour of Wednesday, October 14, 2026 in London, and the time in Toronto. Pick another date in the converter and the chart follows.

Daylight saving time in London and Toronto

• London: UK time, GMT (UTC+0) in winter and BST (UTC+1) in summer. Clocks go forward at 1:00 AM on the last Sunday in March and back at 2:00 AM on the last Sunday in October, the dates the UK government publishes.
• Toronto: Eastern Time, EST (UTC−5) in winter and EDT (UTC−4) in summer. Clocks go forward at 2:00 AM on the second Sunday in March and back at 2:00 AM on the first Sunday in November, as set out in section 2 of the Ontario Time Act.

Seen from London, the clocks go forward on March 29, 21 days after Toronto (March 8), and back on October 25, 7 days before Toronto (November 1) in 2026. In 2027 they go forward on March 28, 14 days after Toronto (March 14), and back on October 31, 7 days before Toronto (November 7).

Seen from London: March 29 widens the gap from 4 hours to 5 hours, October 25 narrows the gap from 5 hours to 4 hours.

Seen from Toronto: March 8 narrows the gap from 5 hours to 4 hours, November 1 widens the gap from 4 hours to 5 hours.

Highlighted: the 49 days in 2026 and 2027 when London and Toronto are 4 hours apart instead of 5 hours, because only one of them has switched:

• March 8, 2026: Toronto switches to EDT, while London stays on GMT until March 29. For these 21 days, Toronto is 4 hours behind London. 9 AM in London becomes 5:00 AM in Toronto for those days, an hour off the usual 4:00 AM.
• October 25, 2026: London switches to GMT, while Toronto stays on EDT until November 1. For these 7 days, Toronto is 4 hours behind London. A 9 AM start in London is then 5:00 AM in Toronto, not 4:00 AM.
• 14 days with Toronto on EDT but London still on GMT: March 14 to March 27, 2027. In that stretch Toronto is 4 hours behind London. Meetings set at 9 AM in London show up at 5:00 AM in Toronto instead of 4:00 AM.
• From October 31 to November 6, 2027, London is already on GMT (UTC) and Toronto is still on EDT (UTC−4). That makes 7 days on which Toronto is 4 hours behind London. 9 AM in London becomes 5:00 AM in Toronto for those days, an hour off the usual 4:00 AM.

London to Toronto hour by hour

London from 6 AM to 11 PM on the left, Toronto on the right, one column for each of the 2 gaps. Highlighted: the 3 hours when London and Toronto are both inside 9 AM to 5 PM, with a gap of 5 hours.

Office hours and the best time to meet

With a 9:00 AM to 5:00 PM workday on both sides, for each gap of the year:

• 5 hours apart (GMT with EST, BST with EDT), 337 days of 2026: 3 hours of shared office time: 2:00 PM to 5:00 PM in London is 9:00 AM to 12:00 PM in Toronto. A one-hour call fits if it starts by 4:00 PM London time (11:00 AM for Toronto).
• 4 hours apart (GMT with EDT), 28 days of 2026: 4 hours of shared office time: 1:00 PM to 5:00 PM in London is 9:00 AM to 1:00 PM in Toronto. Book a one-hour meeting no later than 4:00 PM in London; it then ends at 5:00 PM on the London clock.

The workweek in London and Toronto

For a Monday to Friday week with 9-to-5 office hours in both cities:

The first office hour of the week belongs to London: Monday at 9:00 AM there is Monday at 4:00 AM in Toronto. The last belongs to Toronto, whose Friday 5:00 PM is Friday 10:00 PM in London. Over a Monday to Friday week, London and Toronto share 15 hours of office time with the usual gap of 5 hours.

From midnight until 5:00 AM in London, Toronto has not reached the new day yet. That is 5 hours out of every 24.

A rule of thumb: subtract 5 hours to go from London to Toronto, or 4 hours in the weeks with the other gap. 9:00 AM in London is 4:00 AM in Toronto.

London and Toronto against UTC

Against UTC in 2026: London at UTC+0 in January and UTC+1 in July, Toronto at UTC−5 in January and UTC−4 in July.

In the IANA time zone database, London is Europe/London and Toronto is America/Toronto; your browser converts with that data.

Comparing more than two places? Add as many cities as you need in the time zone converter, or find a slot that works for everyone with the meeting planner. For timestamps from logs or APIs, the Unix timestamp converter turns them into readable dates.

Sources

The clock change rules above come from these pages. The dates, the gap table, the hour table and the office hours are computed from them and checked against the time zone data at build time.

• GOV.UK: When do the clocks change?
• Ontario Time Act, R.S.O. 1990, c. T.9, section 2
• timeanddate.com: clock changes in Toronto
• IANA: Time Zone Database

More city pairs

• London to New York
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• Sydney to London
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• Tokyo to New York
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• Los Angeles to New York
• New York to Sydney
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• New York to Dubai
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• London to Singapore
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• London to Toronto
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• New York to Mumbai
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• New York to Toronto
• New York to Mexico City
• New York to São Paulo
• Los Angeles to Tokyo
• Chicago to London
• Tokyo to Sydney
• Sydney to Auckland
• Singapore to Sydney
• Dubai to Mumbai
• Madrid to Mexico City

Built by Tobias Kurth, designer. Updated October 14, 2026.

Frequently asked questions