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Current time in London

London, Ontario is on Eastern Time, UTC−5 in winter, UTC−4 in summer. Updated for the 2026 time zone changes and current daylight saving rules.

London, Ontario
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Eastern Time · EST / EDT · UTC−5 in winter, UTC−4 in summer

London's time zone

Time zoneEastern Time
CodeEST / EDT
UTC offsetUTC−5 in winter, UTC−4 in summer
Daylight savingYes

Eastern Time. UTC−5 in winter and UTC−4 from the second Sunday in March to the first Sunday in November.

Clock changes, Nov 2026 to Dec 2027

DateChangeNew offset
Mar 14, 2027Clocks go forward 1 hourUTC−4
Nov 7, 2027Clocks go back 1 hourUTC−5

Nearest time zones either side

Earlier · to the westChicago–Chicago is 1 hour behind London all year.Central TimeLater · to the eastHalifax–Halifax is 1 hour ahead of London all year.Atlantic Time

Work with London time

Convert a time to LondonPlan a meeting with London

Also on Eastern Time

Thunder BayTorontoOttawaHamiltonMontrealQuebec CityIqaluitDetroitAtlantaMiamiNew YorkBostonWashington

Questions

What time zone is London in?

London uses Eastern Time (EST / EDT). UTC−5 in winter and UTC−4 from the second Sunday in March to the first Sunday in November.

Does London change its clocks?

Yes. London changes its clocks twice a year: forward on Mar 14, 2027, back on Nov 7, 2027.

What is the time difference between London and Chicago?

Chicago is 1 hour behind London all year.

What is the time difference between London and Halifax?

Halifax is 1 hour ahead of London all year.