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GeoAstro Applets |
Astronomy |
Chaos Game |
Java |
Miscel- laneous |
Sidereal and Solar Time Clocks
The
Java
applet displays clocks for Universal Time, Greenwich Sidereal
Time,
Zone Time, Local Sidereal Time,
Local Solar Time and Greenwich Solar Time.
To change the settings uncheck the Run box before: Select a location from the
menu list, or enter the coordinates (decimal
degrees)
and hit the button "Apply input"
for latitude (northern positive, southern negative), and longitude (eastern positive, western negative),
The applet will adjust the timezone. As there are no definite rules for daylight saving time, check the time offset to get the correct local times. |
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You may use the keys "h", "d", "m" to increase the hour, date, or month, |
The Apparent Solar Time |
is measured by a sundial and is based on
the actual daily motion of the real Sun. |
Zone Time |
There are 25 integer World Time Zones from
-12 through 0 (GMT) to +12. Each one is 15° of
Longitude as measured East and West from the Prime
Meridian at Greenwich.
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The Sidereal Time |
is measured by the rotation of the Earth
with respect to the fixed stars. |
The Local Sidereal Time |
of an observer is equal to the hour angle
of the vernal equinox or the right ascension of the
meridian, or |
You may edit the applet
parameters using a html editor or Window's editor: |
<applet
code="SidSunClock090.class" archive="JavaClasses.jar" align="bottom" height="600" width="600"> <param name="password" value="14365"> <param name="email" value="Thanks for registration"> <param name="location" value="Berlin"> <param name="latitude" value="52.51"> <param name="longitude" value="13.41"> <param name="timezone" value="1"> <param name="daylightsaving" value="1"> <param name="sun" value="1"> </applet> |
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World Time Zone Map with current time Countries/Territories operating Daylight Saving Time, 2006 Compute Local Apparent Sidereal Time (USNO) |
Local Hour Angle and Local Sidereal Time
please visit my GeoAstro Applet Collection
Updated: 2023, Oct 06