ISS height average plot from heavens-above
http://heavens-above.com/issheight.asp?Session=kebgchfjfhpdankehhjdkjjf
i dunno if the link will work here. i was just on the site checking for irridium flares over hilo, hawaii for the next week. there's one neg 8th mag and a few dimmer ones.
t minus 17 1/2 hours....
MrPex