This is an app that has various capabilties related to the International Space Station.
There are APIs at use in the app so it is important to replace the "YOUR_KEY" with your own API key
This app allows users to input there location (or any location for that matter) and recieve some interesting data such as:
shortest path from user location to ISS location
real time ISS tracking (updates every 1 second)
displayed radius on Earth where the ISS would be visible given it was night time
use weather data from API to adjust the radius of the viewing area (for example visibility data)
all of this data is displayed nicely including a map with a visual
Again, remember to replace "YOUR_API" with your own api key.
I worked on this project with Preston Stecklein, you can find the pure Javascript version on his account - pstecklein