Ottawa is in Canada and is currently on UTC-4. Its time zone is America/Toronto.
Ottawa observes daylight saving time. The clocks go back next on 1 November 2026, moving from UTC-4 to UTC-5.
After that the clocks go forward on 14 March 2027, moving from UTC-5 to UTC-4.
The weekend in Ottawa falls on Saturday and Sunday. A working day of 9:00 AM to 6:00 PM is the assumption used on the board.
Ottawa shares America/Toronto with 2 other cities in the catalogue. They all read the same time and change their clocks together.
See the current time across Canada, including the other cities Meridian tracks there and the time zones they use.