Question 1

How many hours of daylight does Ottawa get today?

Accepted Answer

Ottawa currently gets approximately 15 hours and 1 minutes of daylight today. This varies throughout the year — days are longest around the summer solstice (June in the Northern Hemisphere, December in the Southern Hemisphere) and shortest around the winter solstice. At 45.4° latitude, Ottawa sees moderate variation, with summer days noticeably longer than winter days. Our calculations use the SunCalc astronomical library for accuracy within 1–2 minutes.

Question 2

What time does the sun rise in Ottawa?

Accepted Answer

Sunrise times in Ottawa change throughout the year based on the Earth's axial tilt and the city's position at 45.4° latitude. Use the table above to see today's exact sunrise time, as well as dawn (civil twilight) and other twilight phases. The earliest sunrise typically occurs around the summer solstice, while the latest sunrise happens near the winter solstice. The difference between earliest and latest sunrise can be over two hours. All sunrise calculations are based on NOAA solar position algorithms via the SunCalc library.

Question 3

What time does the sun set in Ottawa?

Accepted Answer

Sunset times in Ottawa vary by season due to the Earth's orbital mechanics and the city's latitude of 45.4°. Check the table above for today's exact sunset time, including dusk and twilight phases. The latest sunset typically occurs a few days after the summer solstice, while the earliest sunset happens a few days before the winter solstice. At mid-latitudes, you can expect sunset to vary by 2–3 hours across the seasons.

Question 4

How does day length change throughout the year in Ottawa?

Accepted Answer

Ottawa at 45.4° latitude experiences moderate seasonal day length variation. Summer days are noticeably longer than winter days, with daylight typically ranging from about 8 to 16 hours depending on the time of year. The rate of change is fastest around the equinoxes (March and September), when day length changes by several minutes each day. Around the solstices, the rate of change slows as day length approaches its maximum or minimum. This makes spring and autumn the seasons with the most noticeable daily changes in sunrise and sunset times.

Question 5

What is civil twilight in Ottawa?

Accepted Answer

Civil twilight in Ottawa is the period when the sun is between 0° and 6° below the horizon. During civil twilight, there is enough natural light for most outdoor activities without artificial lighting. It occurs just before sunrise (dawn) and just after sunset (dusk). At mid-latitudes, civil twilight typically lasts about 25–35 minutes. The exact duration for Ottawa is shown in the twilight data table above.

Question 6

What are the different twilight phases?

Accepted Answer

There are three twilight phases, each defined by the sun's angle below the horizon. Civil twilight (0°–6°) is the brightest phase, with enough light for outdoor activities without artificial lighting. Nautical twilight (6°–12°) is dimmer but still allows sailors to see the horizon for celestial navigation. Astronomical twilight (12°–18°) is nearly dark, with only the faintest glow on the horizon, and most stars become visible. Below 18° is considered full astronomical night. The duration of each phase varies by latitude and season — our data table above shows all twilight phases for Ottawa.

Question 7

When is the longest day in Ottawa?

Accepted Answer

The longest day in Ottawa occurs around the summer solstice. For Ottawa in the Northern Hemisphere, the longest day is around June 20–21. On this date, Ottawa experiences its earliest sunrise and near-latest sunset of the year. At 45.4° latitude, the longest day is typically 14–16 hours of daylight. The shortest day (winter solstice) occurs approximately six months later.

Question 8

Does daylight saving time affect sunrise and sunset times in Ottawa?

Accepted Answer

Yes, when Ottawa transitions to daylight saving time, clock-based sunrise and sunset times shift by one hour. However, the actual amount of daylight doesn't change — DST simply moves an hour of daylight from the morning to the evening. This means sunrise appears one hour "later" on the clock during DST, and sunset appears one hour "later" as well. The transition typically causes a noticeable jump in the sunrise/sunset table around the spring and fall changeover dates. Check our DST change calendar for exact transition dates in Ottawa.

Astronomical Dawn	3:26:11 AM
Nautical Dawn	4:20:05 AM
Civil Dawn	5:05:02 AM
Sunrise	5:40:04 AM
Golden Hour End	6:23:20 AM
Solar Noon	1:10:26 PM
Golden Hour Start	7:57:33 PM
Sunset	8:40:49 PM
Civil Dusk	9:15:51 PM
Nautical Dusk	10:00:47 PM
Astronomical Dusk	10:54:42 PM
Day Length	15h 1m

Moonrise	6:21:36 PM
Moonset	1:33:19 AM
Moon Phase	🌔 Waxing Gibbous
Illumination	86%

Date	Sunrise	Sunset	Day Length	Moonrise	Moonset	Phase
Jul 1, Wed	5:19 AM	8:56 PM	15h 37m	9:50 PM	6:30 AM	🌕
Jul 2, Thu	5:19 AM	8:55 PM	15h 36m	10:20 PM	7:39 AM	🌖
Jul 3, Fri	5:20 AM	8:55 PM	15h 35m	10:44 PM	8:49 AM	🌖
Jul 4, Sat	5:21 AM	8:55 PM	15h 34m	11:05 PM	10:00 AM	🌖
Jul 5, Sun	5:21 AM	8:55 PM	15h 33m	11:24 PM	11:10 AM	🌖
Jul 6, Mon	5:22 AM	8:54 PM	15h 32m	11:43 PM	12:22 PM	🌗
Jul 7, Tue	5:23 AM	8:54 PM	15h 31m	12:01 AM	1:37 PM	🌗
Jul 8, Wed	5:23 AM	8:53 PM	15h 30m	12:22 AM	2:56 PM	🌗
Jul 9, Thu	5:24 AM	8:53 PM	15h 29m	12:47 AM	4:16 PM	🌘
Jul 10, Fri	5:25 AM	8:52 PM	15h 27m	1:18 AM	5:38 PM	🌘
Jul 11, Sat	5:26 AM	8:52 PM	15h 26m	1:58 AM	6:56 PM	🌘
Jul 12, Sun	5:27 AM	8:51 PM	15h 25m	2:52 AM	—	🌘
Jul 13, Mon	5:28 AM	8:51 PM	15h 23m	4:00 AM	8:02 PM	🌑
Jul 14, Tue	5:28 AM	8:50 PM	15h 21m	5:18 AM	8:54 PM	🌑
Jul 15, Wed	5:29 AM	8:49 PM	15h 20m	6:40 AM	9:33 PM	🌑
Jul 16, Thu	5:30 AM	8:49 PM	15h 18m	8:00 AM	10:03 PM	🌒
Jul 17, Fri	5:31 AM	8:48 PM	15h 16m	9:19 AM	10:26 PM	🌒
Jul 18, Sat	5:32 AM	8:47 PM	15h 15m	10:33 AM	10:47 PM	🌒
Jul 19, Sun	5:33 AM	8:46 PM	15h 13m	11:45 AM	11:05 PM	🌓
Jul 20, Mon	5:34 AM	8:45 PM	15h 11m	12:54 PM	11:22 PM	🌓
Jul 21, Tue	5:35 AM	8:44 PM	15h 9m	2:04 PM	11:40 PM	🌓
Jul 22, Wed	5:36 AM	8:43 PM	15h 7m	3:13 PM	12:02 AM	🌓
Jul 23, Thu	5:37 AM	8:42 PM	15h 5m	4:20 PM	12:25 AM	🌔
Jul 24, Fri	5:38 AM	8:41 PM	15h 3m	5:24 PM	12:56 AM	🌔
Jul 25, Sat	5:40 AM	8:40 PM	15h 1m	6:21 PM	1:33 AM	🌔
Jul 26, Sun	5:41 AM	8:39 PM	14h 59m	7:09 PM	2:20 AM	🌔
Jul 27, Mon	5:42 AM	8:38 PM	14h 56m	7:49 PM	3:15 AM	🌕
Jul 28, Tue	5:43 AM	8:37 PM	14h 54m	—	4:18 AM	🌕
Jul 29, Wed	5:44 AM	8:36 PM	14h 52m	8:21 PM	5:25 AM	🌕
Jul 30, Thu	5:45 AM	8:35 PM	14h 49m	8:47 PM	6:34 AM	🌕
Jul 31, Fri	5:46 AM	8:33 PM	14h 47m	9:09 PM	7:44 AM	🌖

Sunrise & Sunset in Ottawa, Canada

Sun Times

Moon

Monthly Summary — July 2026

Twilight Phases in Ottawa

Holidays in Canada

Explore Ottawa

Frequently Asked Questions about Sunrise & Sunset in Ottawa

Sunrise & Sunset in Other Cities