Sunrise and sunset in Hangu

The sun comes up at 6:39 am and goes down at 5:04 pm in Hangu today, 10 h 25 min of daylight. Drag the sun across the sky to see where it will be at any minute. Another city.

Hangu, Tianjin, China

Wednesday, November 4

Sunrise6:39 am
Sunset5:04 pm

1:25 am the sun is night, 58 degrees below the horizon

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

HANGU 39.25 N 117.79 E DAY 10 H 25 MIN UTC+8

Today, hour by hour

First light
5:08 am astronomical dawn
Nautical dawn
5:39 am horizon becomes visible
Dawn
6:11 am civil twilight begins
Sunrise
6:39 am
Golden hour
6:22 am to 7:17 am morning
Solar noon
11:52 am sun 35 degrees up
Golden hour
4:26 pm to 5:22 pm evening
Sunset
5:04 pm
Dusk
5:32 pm civil twilight ends
Nautical dusk
6:04 pm
Last light
6:35 pm astronomical dusk, full dark
Day length
10 h 25 min −2 min 12 s vs yesterday

The next thirty days

DaySunriseSunsetDay lengthChange
Today6:39 am5:04 pm10 h 25 min−2 min 12 s
Tomorrow6:40 am5:03 pm10 h 23 min−2 min 11 s
Fri, Nov 66:41 am5:02 pm10 h 21 min−2 min 10 s
Sat, Nov 76:42 am5:01 pm10 h 19 min−2 min 08 s
Sun, Nov 86:43 am5:00 pm10 h 17 min−2 min 07 s
Mon, Nov 96:45 am4:59 pm10 h 15 min−2 min 05 s
Tue, Nov 106:46 am4:58 pm10 h 13 min−2 min 04 s
Wed, Nov 116:47 am4:57 pm10 h 11 min−2 min 02 s
Thu, Nov 126:48 am4:57 pm10 h 09 min−2 min 00 s
Fri, Nov 136:49 am4:56 pm10 h 07 min−1 min 59 s
Sat, Nov 146:50 am4:55 pm10 h 05 min−1 min 57 s
Sun, Nov 156:51 am4:54 pm10 h 03 min−1 min 55 s
Mon, Nov 166:52 am4:53 pm10 h 01 min−1 min 53 s
Tue, Nov 176:53 am4:53 pm9 h 59 min−1 min 51 s
Wed, Nov 186:55 am4:52 pm9 h 57 min−1 min 49 s
Thu, Nov 196:56 am4:51 pm9 h 55 min−1 min 47 s
Fri, Nov 206:57 am4:51 pm9 h 54 min−1 min 44 s
Sat, Nov 216:58 am4:50 pm9 h 52 min−1 min 42 s
Sun, Nov 226:59 am4:49 pm9 h 50 min−1 min 40 s
Mon, Nov 237:00 am4:49 pm9 h 49 min−1 min 37 s
Tue, Nov 247:01 am4:48 pm9 h 47 min−1 min 35 s
Wed, Nov 257:02 am4:48 pm9 h 46 min−1 min 32 s
Thu, Nov 267:03 am4:47 pm9 h 44 min−1 min 29 s
Fri, Nov 277:04 am4:47 pm9 h 43 min−1 min 27 s
Sat, Nov 287:05 am4:47 pm9 h 41 min−1 min 24 s
Sun, Nov 297:06 am4:46 pm9 h 40 min−1 min 21 s
Mon, Nov 307:07 am4:46 pm9 h 39 min−1 min 18 s
Tue, Dec 17:08 am4:46 pm9 h 37 min−1 min 15 s
Wed, Dec 27:09 am4:46 pm9 h 36 min−1 min 12 s
Thu, Dec 37:10 am4:45 pm9 h 35 min−1 min 09 s

Reading the sky band

The band is one day in Hangu, 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 Hangu 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 Hangu

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.