About the time in Ottawa

Ottawa is a city in Canada. It uses the America/Toronto time zone, which is currently UTC-4 — that is, -4 hours from Coordinated Universal Time. Ottawa observes daylight saving time, so its UTC offset shifts by one hour between summer and winter.

Compared with other major cities right now, Ottawa is same time of New York and 5 hours behind of London. The table above updates live, so the differences you see always reflect current daylight saving rules on both sides.

What time zone is Ottawa in?

Ottawa follows the America/Toronto time zone (UTC-4). All clocks on this page are driven by the official IANA time zone database, the same source used by operating systems and airlines worldwide.

Does Ottawa observe daylight saving time?

Yes — clocks shift by one hour between summer and winter, and the times on this page adjust automatically on the changeover dates.

Sunrise and sunset in Ottawa

Today's sunrise and sunset above are calculated astronomically for Ottawa's coordinates (45.42°, -75.7°) and shown in local Ottawa time. They shift a little every day through the year and jump by an hour on daylight saving changeover dates.

How is this clock kept accurate?

The time shown is your device clock converted into Ottawa's time zone using your browser's built-in IANA database. If your device clock is correct, the time above is correct — no server round-trips, nothing to install.