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Current Time in Toronto
Toronto runs on Eastern Standard Time (UTC−5) in winter and Eastern Daylight Time (UTC−4) in summer. Here's the exact time right now, this year's clock-change dates, sunrise/sunset, moon phase, and how it compares to your own clock.
Toronto time
America/Toronto
Toronto
Your time
Comparing to your device's time zone…
Greater Toronto Area, 2024 estimate
Sky & Location Data
Computed for Toronto's exact coordinates — not a generic estimate.
Best Time to Call
Overlap between Toronto's 9:00–18:00 workday and a typical 9:00–17:00 day elsewhere, calculated live for today.
| City | Their time now | Good window (Toronto time) |
|---|---|---|
| Calculating… | ||
The Toronto engineer who invented standard time itself
Long before Toronto had its own time zone story worth telling, one of its own residents rewrote how the entire world keeps time. Sir Sandford Fleming, a Scottish-Canadian engineer who lived and worked in Toronto for much of his career, is widely credited as the driving force behind worldwide standard time — the system of 24 hourly zones measured from a shared prime meridian that every city on this site's clock still runs on. Fleming presented his time-reckoning proposals to the Canadian Institute in Toronto in 1879, then spent years lobbying internationally, culminating in the 1884 International Meridian Conference in Washington, D.C., which formally adopted the zone system.
The University of Toronto's Sir Sandford Fleming Building, built in 1907, still stands in his honor near the school's engineering quadrangle. Fleming's motivation was famously personal: in 1876, while traveling in Ireland, he missed a train because a printed schedule listed a departure as "p.m." instead of "a.m." — a mix-up that convinced him the world's patchwork of local solar times and inconsistent notation needed a single, unambiguous global standard.
Time differences from Toronto
Toronto shares the North American DST calendar with New York and Chicago, so gaps to European and Asian cities shift by an hour around their own clock-change dates.
| City | Typical difference | Notes |
|---|---|---|
| New York | Same time | Both on Eastern Time |
| Chicago | Toronto +1h | Chicago is on Central Time |
| London | Toronto −5h (−4h for a few weeks each spring) | UK and North America shift DST on different dates |
| Mexico City | Toronto +1h (+2h in EDT) | Mexico no longer observes DST |
| Dubai | Toronto −9h (−8h in EDT) | Dubai has no DST |
| Tokyo | Toronto −14h (−13h in EDT) | Tokyo has no DST |
New York is the simplest comparison — the two cities share the exact same Eastern Time zone and clock-change calendar, so they're always in sync.
Working hours and when to call
Toronto keeps a fairly standard North American 9:00–17:00 business day, making it an easy match with other Eastern and Central time cities.
- From New York or Chicago: full or near-full overlap all day.
- From London: a Toronto morning call (9:00–12:00) lands mid-to-late afternoon in London.
- From Tokyo or Shanghai: a Toronto morning call is a Tokyo late evening — workable only for urgent matters.
- From Mexico City: comfortable overlap through most of the standard workday.
Daylight through the year
At just over 43.6°N, Toronto sees a pronounced seasonal swing — roughly 9 hours of daylight around the December solstice, stretching to about 15.5 hours around the June solstice, with long, late-lit summer evenings typical of cities at this latitude.
How we calculate this page: the live clock, UTC offset, and DST dates above are read directly from the IANA America/Toronto time zone data via your browser, not hard-coded. Sunrise, sunset, solar noon, and twilight times are computed from Toronto's exact coordinates (43.6532°N, 79.3832°W) using standard solar position formulas, recalculated on every page load. Moon phase is derived from the current synodic month. Airport distance uses the great-circle formula from those same coordinates to each airport's published location.
Frequently asked questions
What time zone does Toronto use?
Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer, identified as America/Toronto.
When do the clocks change in Toronto?
Clocks move forward one hour on the second Sunday in March and back one hour on the first Sunday in November, the standard North American DST schedule.
Who was Sandford Fleming, and why is he linked to Toronto?
Sandford Fleming was a Scottish-Canadian engineer based in Toronto who is widely credited as the driving force behind worldwide standard time, the 24-zone system adopted at the 1884 International Meridian Conference. The University of Toronto's Sir Sandford Fleming Building, built in 1907, is named in his honor.
What is the time difference between Toronto and New York?
None — both cities are on Eastern Time and change their clocks on the same dates, so they always show the same time.
Is Toronto in the same time zone as Chicago?
No. Toronto uses Eastern Time and Chicago uses Central Time, so Chicago is consistently one hour behind Toronto year-round.
How do I convert Toronto time to my own time zone?
Use the time zone converter, selecting Toronto as the source zone and checking a specific date if the other zone observes DST on a different schedule.
What are normal business hours in Toronto?
Most offices run a standard 9:00 a.m. to 5:00 p.m. day, Monday through Friday, in line with the rest of Eastern Time North America.
Why did Sandford Fleming push for standard time?
In 1876 he missed a train in Ireland because a printed schedule listed a departure as "p.m." instead of "a.m." — a mix-up he blamed on the world's inconsistent local timekeeping, which pushed him to campaign for a single global standard.
Does Toronto observe daylight saving time?
Yes. Toronto follows the standard North American DST schedule, moving clocks forward in March and back in November.
Planning a call across time zones? Try the meeting planner or see all cities on the world clock.
Time zone comparisons: Toronto vs New York · Toronto vs London