Châteauguay
Sunrise and sunset in Châteauguay
Today’s sunrise, sunset and twilight in Châteauguay, in local time. At 45.4° N, the day lasts from 8 h 43 min at the winter solstice to 15 h 40 min at the summer solstice.
Today · worked out at
Wednesday, October 21: sunrise at 07:19, sunset at 17:59.
Day length 10 h 40 min, 3 min 1 s shorter than yesterday.
Solar noon at 12:39, with the Sun 34° above the horizon.
Times are Châteauguay time (EDT).
Twilight and golden hour today
| Today | Morning | Evening |
|---|---|---|
| Astronomical twilight | 05:40 | 19:37 |
| Nautical twilight | 06:14 | 19:03 |
| Civil twilight | 06:49 | 18:29 |
| Sunrise and sunset | 07:19 | 17:59 |
| Golden hour | 07:19–08:00 | 17:18–17:59 |
Each twilight begins at the morning time and ends at the evening one.
The year in Châteauguay
- Longest day: June 21, 15 h 40 min, from sunrise at 05:06 to sunset at 20:46.
- Shortest day: December 21, 8 h 43 min, from sunrise at 07:31 to sunset at 16:14.
Sunrise and sunset on the 21st of each month, 2026
| Date | Sunrise | Sunset | Day length |
|---|---|---|---|
| January 21 | 07:26 | 16:46 | 9 h 20 min |
| February 21 | 06:46 | 17:31 | 10 h 44 min |
| March 21 | 06:56 | 19:08 | 12 h 13 min |
| April 21 | 05:59 | 19:48 | 13 h 50 min |
| May 21 | 05:18 | 20:25 | 15 h 07 min |
| June 21 | 05:06 | 20:46 | 15 h 40 min |
| July 21 | 05:27 | 20:35 | 15 h 08 min |
| August 21 | 06:03 | 19:52 | 13 h 49 min |
| September 21 | 06:40 | 18:54 | 12 h 13 min |
| October 21 | 07:19 | 17:59 | 10 h 40 min |
| November 21 | 07:01 | 16:19 | 9 h 18 min |
| December 21 | 07:31 | 16:14 | 8 h 43 min |
Good to know
- Sunrise and sunset are when the top of the Sun meets a level horizon, allowing for the usual bending of light by the air. Hills, buildings and height shift what you see by a few minutes.
- Civil, nautical and astronomical twilight end when the Sun is 6°, 12° and 18° below the horizon. Golden hour here is the photographers’ usual definition: the Sun less than 6° above it.
- Worked out when the page loads from NOAA’s solar equations, for 45.4° N, 73.7° W, and accurate to about a minute.
How the layers work, where their data comes from and what they can’t tell you: Day and night, live, The Sun, Moon and planets
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