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I also recommend an iPhone app called "ISS Finder". It will notify you when the International Space Station will be making a visible flyby over you. You can then run outside and watch the ISS glide across the night sky at 17,000 mph. It takes about one minute to cross the sky. I always feel awe seeing that ISS dot, knowing humans can launch other humans into orbit 250 miles above.

Yes, always a fun sight. Sky Guide has ISS notifications as well.

I second this recommendation. Sky Guide is a wonderful app for space enthusiasts. The calendar feed does a great job of surfacing upcoming events, and even provides insights on light pollution and ideal viewing times in your area.

Thanks for the tip, looks great! Will it notify for possible aurora borealis sightings as well?

I don't know, I'm afraid I don't live somewhere that can see them.

Does anyone have an Android recommendation that's similar?