Current local time in Thunder BayOntario, Canada
––:––
America/TorontoUTC−5 / UTC−4
Thunder Bay keeps Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer. Its IANA time zone is America/Toronto.
Daylight saving time in Thunder Bay
Thunder Bay changes its clocks twice a year. The next changes, from the IANA time zone database as of October 2026:
- Sun, Nov 1, 2026: clocks go back 1 hour to UTC−5
- Sun, Mar 14, 2027: clocks go forward 1 hour to UTC−4
Cities on the same time as Thunder Bay
These places show the same clock as Thunder Bay every day of the coming year, clock changes included.
- In other countries
New York City (United States), Havana (Cuba), Port-au-Prince (Haiti), Nassau (Bahamas), Providenciales (Turks and Caicos Islands)
Thunder Bay time zone at a glance
- IANA time zone
- America/Toronto
- UTC offset
- UTC−5 / UTC−4
- Daylight saving
- Observed
- Next clock change
- Sun, Nov 1, 2026 → UTC−5
- Country
- Canada
- Region
- Ontario
- Coordinates
- 48.38°, -89.25°
- Population
- 108,843
- Local date
- —
Sunrise and sunset in Thunder Bay today
Computed from Thunder Bay's latitude and longitude for the current local date. Times shift by a minute or two either side depending on elevation and the horizon you actually see.
- Sunrise
- —
- Sunset
- —
- Solar noon
- —
- Day length
- —
- Civil dawn
- —
- Civil dusk
- —
- Golden hour ends
- —
- Golden hour begins
- —
Thunder Bay time difference from major cities
| City | Local time now | Thunder Bay is |
|---|---|---|
| New York CityUnited States | — | same time |
| LondonUnited Kingdom | — | 5h behind |
| DubaiUnited Arab Emirates | — | 8h behind |
| SingaporeSingapore | — | 12h behind |
| TokyoJapan | — | 13h behind |
| SydneyAustralia | — | 15h behind |
Need a different pair? Compare any two cities or convert a specific time.
Thunder Bay time: questions and answers
- What time is it in Thunder Bay right now?
- The clock at the top of this page shows the live local time in Thunder Bay, updated every second from your device's clock. Thunder Bay keeps Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer.
- What time zone is Thunder Bay in?
- Thunder Bay is in the IANA time zone America/Toronto: Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer.
- Does Thunder Bay observe daylight saving time?
- Yes. Upcoming changes: Sun, Nov 1, 2026: clocks go back 1 hour to UTC−5; Sun, Mar 14, 2027: clocks go forward 1 hour to UTC−4.
- Which cities share Thunder Bay's time?
- Toronto, Montréal, Ottawa, Mississauga, Brampton, Hamilton keep the same clock as Thunder Bay all year.
Planning something with Thunder Bay?
- Find a meeting time — the hours that overlap between Thunder Bay and your team.
- Convert a time — turn a time in Thunder Bay into yours, or the other way round.
- Compare office hours — when Thunder Bay offices and yours are both open.
- Send a calendar invite — with the America/Toronto time zone set correctly.