What Time Zone Is Ontario?
Ontario uses 3 time zones: EST (UTC−5), CDT (UTC−5), EST (UTC−5). Toronto is on EST.
--:--:--
· Ontario — main zone
America/Toronto
Time zones in Ontario
Convert Ontario time
Main time zone of Ontario
| Time zone | Eastern Standard Time |
|---|---|
| Abbreviation | EST |
| UTC offset | UTC−5 |
| IANA time zone id | America/Toronto |
| Daylight saving time | Yes – UTC−5 in winter, UTC−4 in summer |
Daylight saving time in Ontario
2026
- 8 March 2026: Clocks go forward 1 hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
- 1 November 2026: Clocks go back 1 hour at 01:59 local time, from EDT (UTC−4) to EST (UTC−5).
2027
- 14 March 2027: Clocks go forward 1 hour at 01:59 local time, from EST (UTC−5) to EDT (UTC−4).
- 7 November 2027: Clocks go back 1 hour at 01:59 local time, from EDT (UTC−4) to EST (UTC−5).
Ontario time zone FAQ
What time zone is Ontario in?
Ontario spans 3 time zones: EST (UTC−5), CDT (UTC−5), EST (UTC−5).
Which areas of Ontario use each time zone?
EST: Toronto, Montréal, Ottawa, Hamilton. CDT: Winnipeg. EST: America/Panama
Does all of Ontario observe daylight saving time?
No. EST, CDT change, while EST stay the same all year.
Updated 6 November 2026. Time zone data: IANA tz database.