Sunrise and sunset in Rio Bonito

The sun comes up at 5:04 am and goes down at 6:03 pm in Rio Bonito today, 13 h 00 min of daylight. Drag the sun across the sky to see where it will be at any minute. Another city.

Rio Bonito, Rio de Janeiro, Brazil

Tuesday, November 3

Sunrise5:04 am
Sunset6:03 pm

10:41 pm the sun is night, 50 degrees below the horizon

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

RIO BONITO 22.71 S 42.61 W DAY 13 H 00 MIN UTC-3

Today, hour by hour

First light
3:44 am astronomical dawn
Nautical dawn
4:12 am horizon becomes visible
Dawn
4:40 am civil twilight begins
Sunrise
5:04 am
Golden hour
4:49 am to 5:34 am morning
Solar noon
11:33 am sun 82 degrees up
Golden hour
5:33 pm to 6:18 pm evening
Sunset
6:03 pm
Dusk
6:27 pm civil twilight ends
Nautical dusk
6:55 pm
Last light
7:23 pm astronomical dusk, full dark
Day length
13 h 00 min +1 min 09 s vs yesterday

The next thirty days

DaySunriseSunsetDay lengthChange
Today5:04 am6:03 pm13 h 00 min+1 min 09 s
Tomorrow5:03 am6:04 pm13 h 01 min+1 min 08 s
Thu, Nov 55:03 am6:05 pm13 h 02 min+1 min 08 s
Fri, Nov 65:02 am6:05 pm13 h 03 min+1 min 07 s
Sat, Nov 75:02 am6:06 pm13 h 04 min+1 min 06 s
Sun, Nov 85:01 am6:06 pm13 h 05 min+1 min 05 s
Mon, Nov 95:01 am6:07 pm13 h 06 min+1 min 05 s
Tue, Nov 105:00 am6:08 pm13 h 07 min+1 min 04 s
Wed, Nov 115:00 am6:08 pm13 h 08 min+1 min 03 s
Thu, Nov 124:59 am6:09 pm13 h 10 min+1 min 02 s
Fri, Nov 134:59 am6:10 pm13 h 11 min+1 min 01 s
Sat, Nov 144:59 am6:10 pm13 h 12 min+1 min 00 s
Sun, Nov 154:58 am6:11 pm13 h 13 min+59 s
Mon, Nov 164:58 am6:12 pm13 h 13 min+58 s
Tue, Nov 174:58 am6:12 pm13 h 14 min+57 s
Wed, Nov 184:58 am6:13 pm13 h 15 min+56 s
Thu, Nov 194:57 am6:14 pm13 h 16 min+55 s
Fri, Nov 204:57 am6:14 pm13 h 17 min+53 s
Sat, Nov 214:57 am6:15 pm13 h 18 min+52 s
Sun, Nov 224:57 am6:16 pm13 h 19 min+51 s
Mon, Nov 234:57 am6:16 pm13 h 20 min+50 s
Tue, Nov 244:57 am6:17 pm13 h 20 min+48 s
Wed, Nov 254:56 am6:18 pm13 h 21 min+47 s
Thu, Nov 264:56 am6:18 pm13 h 22 min+45 s
Fri, Nov 274:56 am6:19 pm13 h 23 min+44 s
Sat, Nov 284:56 am6:20 pm13 h 23 min+43 s
Sun, Nov 294:56 am6:20 pm13 h 24 min+41 s
Mon, Nov 304:56 am6:21 pm13 h 25 min+39 s
Tue, Dec 14:56 am6:22 pm13 h 25 min+38 s
Wed, Dec 24:56 am6:22 pm13 h 26 min+36 s

Reading the sky band

The band is one day in Rio Bonito, 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 Rio Bonito 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 Rio Bonito

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.