Sunrise and sunset in São Martinho

The sun comes up at 7:54 am and goes down at 8:07 pm in São Martinho today, 12 h 13 min of daylight. Drag the sun across the sky to see where it will be at any minute. Another city.

São Martinho, Madeira, Portugal

Sunday, September 20

Sunrise7:54 am
Sunset8:07 pm

6:54 am the sun is astronomical twilight, 13 degrees down

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

SÃO MARTINHO 32.64 N 16.94 W DAY 12 H 13 MIN UTC+1

Today, hour by hour

First light
6:32 am astronomical dawn
Nautical dawn
7:01 am horizon becomes visible
Dawn
7:30 am civil twilight begins
Sunrise
7:54 am
Golden hour
7:39 am to 8:27 am morning
Solar noon
2:01 pm sun 58 degrees up
Golden hour
7:34 pm to 8:22 pm evening
Sunset
8:07 pm
Dusk
8:31 pm civil twilight ends
Nautical dusk
9:00 pm
Last light
9:29 pm astronomical dusk, full dark
Day length
12 h 13 min −1 min 59 s vs yesterday

The next thirty days

DaySunriseSunsetDay lengthChange
Today7:54 am8:07 pm12 h 13 min−1 min 59 s
Tomorrow7:55 am8:05 pm12 h 11 min−1 min 59 s
Tue, Sep 227:55 am8:04 pm12 h 09 min−2 min 00 s
Wed, Sep 237:56 am8:03 pm12 h 07 min−2 min 00 s
Thu, Sep 247:57 am8:01 pm12 h 05 min−2 min 00 s
Fri, Sep 257:57 am8:00 pm12 h 03 min−2 min 00 s
Sat, Sep 267:58 am7:59 pm12 h 01 min−2 min 00 s
Sun, Sep 277:59 am7:57 pm11 h 59 min−2 min 00 s
Mon, Sep 287:59 am7:56 pm11 h 57 min−2 min 00 s
Tue, Sep 298:00 am7:55 pm11 h 55 min−1 min 59 s
Wed, Sep 308:01 am7:53 pm11 h 53 min−1 min 59 s
Thu, Oct 18:01 am7:52 pm11 h 51 min−1 min 59 s
Fri, Oct 28:02 am7:51 pm11 h 49 min−1 min 59 s
Sat, Oct 38:03 am7:49 pm11 h 47 min−1 min 59 s
Sun, Oct 48:03 am7:48 pm11 h 45 min−1 min 59 s
Mon, Oct 58:04 am7:47 pm11 h 43 min−1 min 59 s
Tue, Oct 68:05 am7:46 pm11 h 41 min−1 min 59 s
Wed, Oct 78:05 am7:44 pm11 h 39 min−1 min 58 s
Thu, Oct 88:06 am7:43 pm11 h 37 min−1 min 58 s
Fri, Oct 98:07 am7:42 pm11 h 35 min−1 min 58 s
Sat, Oct 108:08 am7:40 pm11 h 33 min−1 min 58 s
Sun, Oct 118:08 am7:39 pm11 h 31 min−1 min 57 s
Mon, Oct 128:09 am7:38 pm11 h 29 min−1 min 57 s
Tue, Oct 138:10 am7:37 pm11 h 27 min−1 min 57 s
Wed, Oct 148:10 am7:36 pm11 h 25 min−1 min 56 s
Thu, Oct 158:11 am7:34 pm11 h 23 min−1 min 56 s
Fri, Oct 168:12 am7:33 pm11 h 21 min−1 min 56 s
Sat, Oct 178:13 am7:32 pm11 h 19 min−1 min 55 s
Sun, Oct 188:13 am7:31 pm11 h 17 min−1 min 55 s
Mon, Oct 198:14 am7:30 pm11 h 16 min−1 min 54 s

Reading the sky band

The band is one day in São Martinho, 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 São Martinho 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 São Martinho

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.