Sidereal Time Applet

This uses the clock on your system and gets GMT from that
then calculates Sidereal Time.

Hope its useful...

http://80.3.72.34/~robin/sidereal_time/

Interesting. But I thought Greenwich and Universal were the same?

"Mike" wrote in message
...
Interesting. But I thought Greenwich and Universal were the same?

Not quite. See:

http://aa.usno.navy.mil/faq/docs/UT.html

"Greg Neill" wrote in message
. ..

Not quite. See:

http://aa.usno.navy.mil/faq/docs/UT.html

But when last checked GST and UTC differed by 16 hours, 22 minutes.

Mike wrote:

But when last checked GST and UTC differed by 16 hours, 22 minutes.

GST, Greenwich Sidereal Time, is an entirely different animal from
the old GMT, Greenwich Mean Time, and its modern successors, UTC &c.
The latter are based on measures of solar time (corresponding to the
position of the "mean sun"), while sidereal time is based on the
position of the stars. GST and UT are about the same at the autumnal
equinox each year, and are about twelve hours apart at the vernal
equinox; the difference between them changes by a little under four
minutes per day.

--
Odysseus

"Mike" wrote in message
...

"Greg Neill" wrote in message
. ..

Not quite. See:

http://aa.usno.navy.mil/faq/docs/UT.html

But when last checked GST and UTC differed by 16 hours, 22 minutes.

Don't confuse GST with GMT...

Thanks. I wasn't sure but assumed gst was Greenwich standard time. I've
bookmarked the site to become familiar with sidereal time.

30......30

Satellite gone way up to Mars
Soon it will be filled with parking cars.
I watched it for a little while
I like to watch things on TV.

-Lou Reed, Satellite of Love