Sunrise and sunset in Ōkubo

The sun comes up at 6:05 am and goes down at 4:43 pm in Ōkubo today, 10 h 38 min of daylight. Drag the sun across the sky to see where it will be at any minute. Another city.

Ōkubo, Tokyo, Japan

Wednesday, November 4

Sunrise6:05 am
Sunset4:43 pm

2:26 am the sun is night, 45 degrees below the horizon

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

ŌKUBO 35.70 N 139.70 E DAY 10 H 38 MIN UTC+9

Today, hour by hour

First light
4:38 am astronomical dawn
Nautical dawn
5:08 am horizon becomes visible
Dawn
5:39 am civil twilight begins
Sunrise
6:05 am
Golden hour
5:49 am to 6:41 am morning
Solar noon
11:24 am sun 39 degrees up
Golden hour
4:07 pm to 4:59 pm evening
Sunset
4:43 pm
Dusk
5:09 pm civil twilight ends
Nautical dusk
5:40 pm
Last light
6:10 pm astronomical dusk, full dark
Day length
10 h 38 min −1 min 56 s vs yesterday

The next thirty days

DaySunriseSunsetDay lengthChange
Today6:05 am4:43 pm10 h 38 min−1 min 56 s
Tomorrow6:06 am4:42 pm10 h 36 min−1 min 55 s
Fri, Nov 66:07 am4:41 pm10 h 34 min−1 min 53 s
Sat, Nov 76:08 am4:40 pm10 h 32 min−1 min 52 s
Sun, Nov 86:09 am4:39 pm10 h 30 min−1 min 51 s
Mon, Nov 96:10 am4:38 pm10 h 28 min−1 min 49 s
Tue, Nov 106:11 am4:38 pm10 h 27 min−1 min 48 s
Wed, Nov 116:12 am4:37 pm10 h 25 min−1 min 47 s
Thu, Nov 126:13 am4:36 pm10 h 23 min−1 min 45 s
Fri, Nov 136:14 am4:35 pm10 h 21 min−1 min 44 s
Sat, Nov 146:15 am4:35 pm10 h 20 min−1 min 42 s
Sun, Nov 156:16 am4:34 pm10 h 18 min−1 min 40 s
Mon, Nov 166:17 am4:33 pm10 h 16 min−1 min 38 s
Tue, Nov 176:18 am4:33 pm10 h 15 min−1 min 37 s
Wed, Nov 186:19 am4:32 pm10 h 13 min−1 min 35 s
Thu, Nov 196:20 am4:32 pm10 h 12 min−1 min 33 s
Fri, Nov 206:21 am4:31 pm10 h 10 min−1 min 31 s
Sat, Nov 216:22 am4:31 pm10 h 09 min−1 min 29 s
Sun, Nov 226:23 am4:30 pm10 h 07 min−1 min 27 s
Mon, Nov 236:24 am4:30 pm10 h 06 min−1 min 25 s
Tue, Nov 246:25 am4:29 pm10 h 04 min−1 min 22 s
Wed, Nov 256:26 am4:29 pm10 h 03 min−1 min 20 s
Thu, Nov 266:27 am4:29 pm10 h 02 min−1 min 18 s
Fri, Nov 276:28 am4:28 pm10 h 00 min−1 min 15 s
Sat, Nov 286:29 am4:28 pm9 h 59 min−1 min 13 s
Sun, Nov 296:30 am4:28 pm9 h 58 min−1 min 11 s
Mon, Nov 306:31 am4:28 pm9 h 57 min−1 min 08 s
Tue, Dec 16:32 am4:27 pm9 h 56 min−1 min 05 s
Wed, Dec 26:32 am4:27 pm9 h 55 min−1 min 03 s
Thu, Dec 36:33 am4:27 pm9 h 54 min−1 min 00 s

Reading the sky band

The band is one day in Ōkubo, 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 Ōkubo 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 Ōkubo

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.