Can you tell me when the sun will set April 2, 2005 in Tucson, AZ.  We
are planning an invent involving outdoor lighted sculptures and we
want to time the event when it is dark.

Maijmi ?

Almost all weather sites use the U.S. Naval Observatory?s astronomical
data to determine sunrise, sunset, moonrise, moonset.  They have a
handy dandy little calculator that allows you to see the data for
22,000 U.S. cities (and others worldwide too):
U.S. Naval Observatory
?Complete Sun and Moon Data for One Day?
http://aa.usno.navy.mil/data/docs/RS_OneDay.html

Sunset that day is 6:44 p.m.

It may be equally important to you to know that the end of civil
twilight is 7:09 p.m.  That?s when it gets PRETTY dark: that?s when
the sun is 6 degrees below the horizon.  For pilots, it?s a definition
of when nighttime starts.

There?s also a nautical twilight when the sun is 12 degrees below the
horizon.  That?s when it?s dark.  And there?s even an astronomical
twilight (the sun is 18 degrees below the horizon) when it?s so dark
that even the faintest stars are visible.

Another piece of news: the moon won?t rise until 3:08 a.m. on April 3,
so you won?t have light from it interfering.

Google search strategy:
Go to www.weatherundergound.com and track the astronomical data for
April 2, 2005 to the U.S. Naval Observatory


Best regards,

Omnivorous-GA