There are bright overflights for Salt Lake City if Atlantis makes its final liftoff flight as scheduled on Friday. There is - in nautical twilight - a shuttle chase observing opportunity. May only be visually observable. Weather remains the main variable. Friday May 14 22:16 MDT (10:16 PM MDT) mag -3.5 Culminates az 222 alt 39 ISS Alone Saturday May 15 21:06 MDT (9:06 PM MDT) mag -4.1 Culminates az 34 alt 61 sun alt -6 Shuttle Chase ISS passes first Shuttle follows 12 minutes later Saturday May 15 21:18 MDT (9:18 PM MDT) mag -2.3 Culminates az 36 h 78 approach az 307 departs az 123 sun alt -7 Sunday May 16 21:30 MDT (9:30PM MDT) mag -3.2 Culminates az 222 alt 36 Shuttle Docked with ISS approach az 299 departs az 154 During this pass, during its dimmer phase nearer horizon, the Shuttle and ISS will pass within 3.8 degs of a crescent Moon. - Clear Skies - Kurt Related NASA Science News Article http://science.nasa.gov/science-news/science-at-nasa/2010/13may_planetsandsp...