Dusk and last light in Ottawa
Last light (civil dusk) in Ottawa today fades at 21:08, about 34 minutes after the sun sets at 20:34. The sky is fully dark by astronomical dusk at 22:43. Times for Tuesday, 28 July 2026, in Ottawa's local time zone.
| Stage | What it means | Local time |
|---|---|---|
| Sunset | the sun dips below the horizon | 20:34 |
| Civil dusk (last light) | sun 6° below, usable light ends | 21:08 |
| Nautical dusk | sun 12° below, sea horizon gone | 21:52 |
| Astronomical dusk | sun 18° below, full night | 22:43 |
Dusk in Ottawa, stage by stage
Dusk in Ottawa runs the same three stages as dawn, in reverse. Once the sun sets, civil dusk, the last usable light, lingers until the sun is 6 degrees below the horizon. Nautical dusk follows at 12 degrees, when the sea horizon disappears, and astronomical dusk at 18 degrees, after which the sky is fully dark and the faintest stars appear. How long dusk lasts depends on Ottawa's latitude: near the equator night falls fast, while at high latitudes dusk can stretch for hours or, in high summer, never fully darken. Every time here is computed for Ottawa's coordinates and shown in its local time zone.
Frequently asked questions about dusk in Ottawa
What time is last light in Ottawa today?
Last light (civil dusk) in Ottawa fades at 21:08 on Tuesday, 28 July 2026, about 34 minutes after sunset at 20:34. All times are in Ottawa's local time zone.
What is the difference between dusk and sunset in Ottawa?
Sunset is the instant the sun disappears below the horizon in Ottawa; dusk is the fading twilight that follows. Last light (civil dusk) ends the usable light after sunset.
When does it get fully dark in Ottawa?
Ottawa reaches full darkness at astronomical dusk, 22:43 on Tuesday, 28 July 2026, when the sun is 18 degrees below the horizon.
Every time on this page is computed from Ottawa's coordinates with SunCalc, not estimated or looked up from a table.