Loading...
The current time in Ottawa, Canada is shown live on this page. Ottawa is in the America/Toronto timezone, which has a UTC offset of UTC-04:00 (EDT). Ottawa observes daylight saving time, switching between EST (UTC-04:00) and EDT (UTC0:05) annually. Ottawa has a population of approximately 1M people. Ottawa uses CAD and the international calling code for Canada is ++1. Other cities in the same timezone include Toronto, Montreal, Quebec City.
Now in CA
Timezone
America/Toronto
UTC offset
UTC-04:00
Standard
EST
DST
EDT
Local time guide
Use this page when you need the live local time in Ottawa for meetings, travel plans, event schedules, support hours, or international calls. London is currently 5 hours ahead of Ottawa. New York is currently the same time as Ottawa.
At a glance
Quick compare
Timezone
America/Toronto
UTC Offset
UTC-04:00
Abbreviation
EDT
DST
Observing now
Region
Northern America
Country
Canada
State / Area
Ontario
Calling Code
+1
Nearest timezone boundary
The nearest major city that uses a different timezone is Boston, approximately 504 km away. Boston uses the America/New York timezone. When it is the current time in Ottawa, the time in Boston is different by 0 hours.
City profile
Ottawa is located in Ontario, Canada, in the North America continent. The primary languages spoken here are English, French. The city has a population of approximately 1M, ranking it #227 in Canada by size. For timezone purposes, Ottawa uses America/Toronto (UTC-04:00). It observes daylight saving time, switching between EST and EDT depending on the time of year.
Travel and calls
Ottawa observes daylight saving time. In 2026, clocks spring forward on March 8 (from EDT to EDT) and clocks fall back on November 1 (from EST to EST).
Currently observing Daylight Saving Time (DST).
Time comparison
Here is what time it is in other major cities when it is 12:00 AM (midnight) in Ottawa. This is useful for planning calls and understanding the time difference at a fixed reference point.
Daylight hours
Based on Ottawa's latitude (45.4°N), the estimated daylight duration for this month is approximately 15.5 hours, with sunrise around 4:16 AM and sunset around 7:44 PM. At this mid-latitude, daylight hours shift noticeably between seasons, with longer days in summer and shorter days in winter.
Best time to call
For work calls, the standard business window in Ottawa is roughly 9:00 AM to 5:00 PM EDT. If the other party is in a distant timezone, verify the exact date before sending a calendar invite — daylight saving transitions can shift the overlap by an hour without warning.
Business hours in Ottawa (9:00 AM - 1:00 PM) overlap with London starting at 2:00 PM. The best window for calls between these two cities is 4 hours per day. Business hours overlap: 9:00 AM - 1:00 PM in Ottawa time.
Local planning notes
Best call window
The optimal window for calls between Ottawa and London is 9:00 AM - 1:00 PM in Ottawa time (4 overlapping hours).
Daylight saving impact
Ottawa switches between EST and EDT each year. Recurring meetings may shift by an hour during transitions. Upcoming transitions: spring forward on March 8, fall back on November 1.
Travel essentials
For travel and business planning, Ottawa uses CAD and the calling code for Canada is +1. Languages spoken here include English, French. The city has a population of around 1M, making it a local reference point for timezone planning in Northern America.
Timezone context
The nearest timezone boundary is 504 km away at Boston (EST). This is a moderate distance, but the timezone difference can affect daily coordination.
Popular conversions
The most relevant time conversions for Ottawa are with nearby Northern America cities and major global hubs in different timezones.
Timezone boundaries nearby
The closest cities that operate in a different timezone than Ottawa. Useful for understanding where the timezone boundary falls and how local times differ just a short distance away.
Same timezone
Toronto, Montreal, Quebec City, Hamilton, and others share the America/Toronto timezone with Ottawa. These cities have the same current offset and follow the same daylight saving schedule, so they are useful alternatives when comparing local time across the region.
Embed this clock
Embed a live Ottawa clock on your website. The widget is fully responsive, lightweight, and free to use.
From the blog
7 min read
Ethiopian Calendar vs Gregorian Calendar: Why Dates Matter for International Scheduling
The Ethiopian calendar is different from the Gregorian calendar used by most international businesse…
5 min read
Why Cross-Time-Zone Deadlines Break Logistics Workflows
Cross-time-zone deadlines can disrupt logistics workflows, reporting, supplier coordination, and reg…
6 min read
Why the Date You Were Born Can Depend on Time Zone
Your birth date can look different across time zones. Learn why local time matters for birthdays, re…