| CITY | LOCAL TIME | Difference | Coming up |
|---|---|---|---|
| London United Kingdom | 01:00Thu | +5h | Becomes +4h on 25 Oct |
| Berlin Germany | 02:00Thu | +6h | Becomes +5h on 25 Oct |
| Dubai UAE | 04:00Thu | +8h | Becomes +9h on 1 Nov |
| Tokyo Japan | 09:00Thu | +13h | Becomes +14h on 1 Nov |
| Sydney Australia | 10:00Thu | +14h | Becomes +15h on 4 Oct |
| New York United States | 20:00 | ±0h | |
| Los Angeles United States | 17:00 | −3h | Becomes −2h on 31 Oct |
Thunder Bay, Canada runs on UTC−4. Clocks move forward each spring and back each autumn: UTC−5 in winter, UTC−4 in summer. Next change: 1 Nov. Thunder Bay and New York currently share the same clock. Standard 9-to-6 working hours overlap for about 9 hours a day with New York. A good time to connect: 09:00–18:00 in Thunder Bay lines up with 09:00–18:00 in New York. The time difference between Thunder Bay and London is 5 hours. Standard 9-to-6 working hours overlap for about 4 hours a day with London. A good time to connect: 09:00–13:00 in Thunder Bay lines up with 14:00–18:00 in London. The time difference between Thunder Bay and Tokyo is 13 hours. Standard working hours don't overlap at all with Tokyo, so meetings need an early or late slot on one side. This timezone is also shared with cities such as Toronto, Havana, Washington DC. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Thunder Bay.
Thunder Bay (Canada) is home to roughly 110K people. Today brings about 11.7 hours of daylight: sunrise at 07:54, sunset at 19:39. Clocks move forward each spring and back each autumn: UTC−5 in winter, UTC−4 in summer. Next change: 1 Nov. It sits in the Northern Hemisphere, about 48° north of the equator. Traffic drives on the right.
Flag
Canada
Capital
Ottawa
Continent
North America
Time Zone
EDT · America/Toronto
Coordinates
48.38°N, 89.25°W
Currency
CAD ($)
Calling Code
+1
Driving Side
Right
Hemisphere
Northern
Language
English, French
Measurement System
Metric
Did You Know?
Terry Fox's Marathon of Hope ended outside Thunder Bay on 1 September 1980 after 5,373 kilometres, when his cancer returned. The annual runs held in his name have since raised over $850 million.
The clock: Thunder Bay keeps Eastern Time although it sits almost on the 90th meridian, the Central zone's own; Ontario's time boundary runs not far west of the city, and Kenora keeps Central Time.
Thunder Bay lies at 89.3°W. Its time zone, UTC−5, is built around the 75°W meridian. The 14.3° gap between them means the clock runs roughly 57 minutes ahead of the sun: solar noon arrives at about 12:57 rather than 12:00. Under daylight saving the clocks move 60 minutes forward, widening the gap to 117 minutes and pushing solar noon to 13:57.
The longest day of 2026 is 22 June, with 16h 6m of daylight. The shortest is 22 December, with 8h 19m. The swing between them is 7h 48m. This is the latitude band where the difference between summer and winter evenings is most obvious.
The earliest sunrise and the latest sunset do not land on the longest day. In Thunder Bay the sun comes up earliest on 17 June at 05:55, while the latest sunset waits until 27 June at 22:02. The equation of time is what separates them: the Earth's elliptical orbit and axial tilt move solar noon back and forth by several minutes over the year.
The sky stays usably light for a while after the sun goes down. In Thunder Bay that civil twilight runs about 31 minutes at the equinox, stretching to 42 minutes at the solstice.
Every figure in this section is computed from the city's own latitude, longitude and IANA time zone using NOAA solar algorithms (Spencer, 1971), accurate to about ±2 arcminutes below 65° latitude.
The official timezone for Thunder Bay, Canada is America/Toronto with a current UTC offset of UTC−4.
Thunder Bay has an estimated population of 110K and is located at coordinates 48.38°N, 89.25°W.
Thunder Bay gets 16h 6m of daylight on its longest day and 8h 19m on its shortest, averaging 12h 15m a day across the year.
Solar noon in Thunder Bay falls at about 12:57 on UTC−5 standard time, because the city sits 14.3° from the meridian its zone is built on.
A Run That Stopped Partway: Terry Fox's Marathon of Hope ended outside Thunder Bay on 1 September 1980 after 5,373 kilometres, when his cancer returned. The annual runs held in his name have since raised over $850 million.