Sun View Applet


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civil twilight:
0 < height < - 6 deg.

nautical twilight:
- 6 deg. < height < - 12 deg.

astronomical twilight:
- 12 deg. < height < - 18 deg.

altitude and azimuth

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the altitude (above horizon)

and azimuth angle of the sun
and it's direction (in brackets)

0 deg. = N, 90 deg. = E
180 deg. = S, 270 deg. = W

For a new location:

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enter latitude, and press return key
(not enter key !)

- degrees latitude as
a non-negative integer or decimal (0° to 90),
and select "N" or "S"





enter longitude, and press return key

- degrees longitude as a
non negative integer or decimal (0 to 180),
and select "E" or "W"

home location

Change the parameter values of "location", "latitude" and "longitude" parameters:

enter southern latitude and western longitudes with minus sign !

<APPLET CODE="sunviewxxx.class" archive="Applet/JavaClasses.jar"
NAME="Sun View" WIDTH=600 HEIGHT=490 ALIGN=bottom>

<PARAM name="email" value="replace">
<PARAM name="password" value="12345">
<PARAM NAME=location VALUE=Berlin>
<PARAM NAME=latitude VALUE="52.51">
<PARAM NAME=longitude VALUE="13.41">


Time Zone Offset

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time difference between zone time and Greenwich Time (GMT )

With Netscape 4 and Internet Explorer 4, the applet should display the correct time zone offset:

Central European Daylight Time = GMT + 2 hours
Central European Time = GMT + 1 hour
"time zone offset is +2 h" (for Central European Daylight Time)
If necessary, select the correct time zone offset from the menu.

declination and GHA

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the declination and Greenwich-Hour-Angle (GHA) are the coordinates (latitude and longitude) of the sun's Geographical Position (GP), where the line from the sun to the center of the earth intersects it's surface.

equation of time

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The Equation of time is the difference between the time determined by a sundial and the clock time. It is due to the obliquity and the unequal motion of the sun (ellipse).

For detailed information:
Royal Greenwich Observatory Fact File: 'The Equation of Time'.

USNO Master Clock Animated GIF Clock:

Click to see the correct GMT (UTC)

The running GIF clock was developed for browsers that support "Content-type: multipart/x-mixed-replace"
Netscape does this correctly. Internet Explorer does not.