For those with an Android smartphone out there, with an interest in Astronomy, the Heavens Above app is something you should install immediately.

It provides look ups for satellite crossings based on your location, as well as the ability to set alerts based on search conditions. I’ve had it installed for a couple of weeks, and have used it to catch half a dozen ISS passes and an iridium flare. While you can always go and look for these things online, having your phone give you a 5 minute alert when one is coming in your area is very cool.