Time in Ontario,Canada

Ontario uses two official time zones: most of the province follows Eastern Time (ET), while the far northwestern communities near the Manitoba border observe Central Time (CT). Both zones follow Canada’s Daylight Saving Time schedule, switching between EST/EDT and CST/CDT each year.

Ontario Time Zone Information

• Time Zones: Eastern Time (ET) & Central Time (CT)

• Standard Time:

  • Eastern Standard Time: UTC−5

  • Central Standard Time: UTC−6

• Daylight Saving Time:

  • Eastern Daylight Time: UTC−4

  • Central Daylight Time: UTC−5

• DST Observation: Yes, Ontario observes Daylight Saving Time

• IANA Time Zone IDs: America/Toronto, America/Thunder_Bay, America/Nipigon, America/Rainy_River, America/Winnipeg

• Official reference: Ontario on Wikipedia

Major cities following Eastern Time: Toronto, Ottawa, Hamilton, Mississauga, London, Windsor, Kitchener
Major cities following Central Time: Kenora, Atikokan, Rainy River region