Daylight after work in Chicago
From 8 March to 20 October. 227 evenings.
Sunset is later than 6:00 PM in Chicago from 8 March to 20 October.
The first evening
8 Mar
When the clocks go forward. By the sun alone, 18 Mar.
The last
20 Oct
Sunset at 6:02 PM.
The most light
2 h 30 min
On 27 Jun. Sunset at 8:30 PM.
Today
9 min
of light after 6:00 PM. Sunset at 6:09 PM.
Where the sun is when you finish.
You stand at the middle of your horizon. The dots are the sun’s path that day, bright from the hour you finish to the light’s end. Move the hour, walk the year, or drag the sky to turn it.
Clocks go forward on 8 March and back on 1 November (CST ↔ CDT). Sunset moves from 5:49 PM to 6:50 PM on 8 March, and from 5:46 PM to 4:45 PM on 1 November. The 8 March crossing is the clock's doing — on the sun alone, sunset would reach 6:00 PM on 18 March.
How it knows.
Three kinds of evening light
Sunset is the sun’s upper edge on the horizon, its centre 0.833° below it, the standard allowance for the air bending its light. Civil dusk is the sun 6° below, light enough to walk by. The golden hour begins with the sun 6° up.
The dates, to the minute
For every day of the year the sun’s altitude is worked out for this place, and the minute it crosses each line is found. A date is the first evening that falls after the hour you finish, and the last. When a clock change moves a date, the page says so, with the day the sun alone would have reached it.
Any place, any year
New York, London and Melbourne are worked out every night so their answers can be read before the page runs; the same arithmetic runs in your browser for any place, any year and any hour. Each city’s year is published beside its page as JSON, CC BY 4.0.
Sunset later than 6 PM, elsewhere.
Los Angeles8 Mar – 31 Oct San Francisco26 Feb – 31 Oct Seattle5 Mar – 26 Oct Denver8 Mar – 30 Oct New York8 Mar – 25 Oct London13 Mar – 18 Oct Melbourneuntil 10 Apr · from 3 Sep Where you standany place, in your browserMake room for the light.
Sol for iPhone is coming soon, with the day’s light on your Lock Screen and your wrist, and an alert when tonight is worth walking out for. Leave your address for one email when it ships.
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