Sunrise and sunset in Simen

The sun comes up at 6:46 am and goes down at 7:00 pm in Simen today, 12 h 14 min of daylight. Drag the sun across the sky to see where it will be at any minute. Another city.

Simen, Gansu, China

Sunday, September 20

Sunrise6:46 am
Sunset7:00 pm

5:34 am the sun is astronomical twilight, 15 degrees down

Drag the sun. Arrow keys move a minute, Shift for fifteen.

SIMEN 34.62 N 105.01 E DAY 12 H 14 MIN UTC+8

Today, hour by hour

First light
5:21 am astronomical dawn
Nautical dawn
5:51 am horizon becomes visible
Dawn
6:21 am civil twilight begins
Sunrise
6:46 am
Golden hour
6:30 am to 7:19 am morning
Solar noon
12:53 pm sun 56 degrees up
Golden hour
6:27 pm to 7:15 pm evening
Sunset
7:00 pm
Dusk
7:25 pm civil twilight ends
Nautical dusk
7:54 pm
Last light
8:24 pm astronomical dusk, full dark
Day length
12 h 14 min −2 min 09 s vs yesterday

The next thirty days

DaySunriseSunsetDay lengthChange
Today6:46 am7:00 pm12 h 14 min−2 min 09 s
Tomorrow6:46 am6:58 pm12 h 12 min−2 min 09 s
Tue, Sep 226:47 am6:57 pm12 h 10 min−2 min 09 s
Wed, Sep 236:48 am6:55 pm12 h 07 min−2 min 09 s
Thu, Sep 246:49 am6:54 pm12 h 05 min−2 min 09 s
Fri, Sep 256:49 am6:53 pm12 h 03 min−2 min 09 s
Sat, Sep 266:50 am6:51 pm12 h 01 min−2 min 09 s
Sun, Sep 276:51 am6:50 pm11 h 59 min−2 min 09 s
Mon, Sep 286:52 am6:48 pm11 h 57 min−2 min 09 s
Tue, Sep 296:52 am6:47 pm11 h 55 min−2 min 09 s
Wed, Sep 306:53 am6:46 pm11 h 52 min−2 min 09 s
Thu, Oct 16:54 am6:44 pm11 h 50 min−2 min 09 s
Fri, Oct 26:55 am6:43 pm11 h 48 min−2 min 08 s
Sat, Oct 36:55 am6:41 pm11 h 46 min−2 min 08 s
Sun, Oct 46:56 am6:40 pm11 h 44 min−2 min 08 s
Mon, Oct 56:57 am6:39 pm11 h 42 min−2 min 08 s
Tue, Oct 66:58 am6:37 pm11 h 40 min−2 min 08 s
Wed, Oct 76:58 am6:36 pm11 h 38 min−2 min 08 s
Thu, Oct 86:59 am6:35 pm11 h 35 min−2 min 07 s
Fri, Oct 97:00 am6:33 pm11 h 33 min−2 min 07 s
Sat, Oct 107:01 am6:32 pm11 h 31 min−2 min 07 s
Sun, Oct 117:01 am6:31 pm11 h 29 min−2 min 07 s
Mon, Oct 127:02 am6:29 pm11 h 27 min−2 min 06 s
Tue, Oct 137:03 am6:28 pm11 h 25 min−2 min 06 s
Wed, Oct 147:04 am6:27 pm11 h 23 min−2 min 06 s
Thu, Oct 157:05 am6:25 pm11 h 21 min−2 min 05 s
Fri, Oct 167:06 am6:24 pm11 h 19 min−2 min 05 s
Sat, Oct 177:06 am6:23 pm11 h 17 min−2 min 04 s
Sun, Oct 187:07 am6:22 pm11 h 14 min−2 min 04 s
Mon, Oct 197:08 am6:20 pm11 h 12 min−2 min 03 s

Reading the sky band

The band is one day in Simen, midnight to midnight, in its own local time. The curve is the sun's height: above the line it is up, below it is not. The dark bands are the three twilights and night; the lighter stripe either side of sunrise and sunset is the golden hour, and the thin cool stripe after it is the blue hour. Drag the sun to any minute and the readout says how high it is and which way to look.

Dawn, sunrise, dusk and the three twilights

Sunrise and sunset are when the top edge of the sun meets a flat horizon, with refraction bending the light so it shows up a little early and lingers a little late (the sun's centre is 0.833 degrees below the horizon at that moment). Civil twilight is the sun within 6 degrees below: bright enough to work outside without lights. Nautical twilight runs to 12 degrees, when sailors could still see the horizon to shoot a star. Astronomical twilight runs to 18 degrees; after that the sky is as dark as it gets.

Why the times drift

Day length in Simen changes fastest around the equinoxes in March and September and stalls at the solstices in June and December. The change column in the table is today against yesterday, so you can watch the evenings draw in or stretch out. Hills, buildings and haze at your actual horizon shift the real moment by a minute or several; these are the times for a flat, clear horizon at sea level.

Near Simen

What stays here

Everything on this page is arithmetic on a latitude, a longitude and the clock, done once at the edge so the numbers are in the page before any script runs, and again in your browser as you drag the sun. No account, no cookies, nothing typed here is stored. The only thing this page records is that a city was looked up, and which one.