ISS at Sunset

From: Jeff Umbarger (
Date: Mon Jul 10 2006 - 00:11:16 EDT

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    Hey All,
         Watching the NASA channel this evening (Monday
    July 10, 1:40 UTC)I saw where the ISS/Shuttle was
    approaching the Dallas TX USA area from the northwest
    right at sunset. I quickly pulled up my HA site but it
    didn't show a "visible" pass. I went outside and
    looked straight up into the clear sunset/bright
    twilight sky and there they were going overhead, very
    visible. So what is the criteria that HA uses for a
    "visible" pass, e.g.; does the sun must be more than 6
    degrees below the horizon or something like that? I
    believe you should be able to see these spacecraft in
    daylight. Anyone ever seen that occur?
    BTW, for all of you that watched NASA TV on your cable
    or dish TV systems, is NASA audio out? It is on my
    cable system and COMCAST is blaming NASA. Just
    wondering if this is a local problem.
              Jeff Umbarger
              Plano, TX USA
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