This shows the ISS position (and the moon if you can spot it) in real time. Positions are retrieved from NASA SSC. You can check that the positions are correct here or by looking the real time ISS streaming here.
Sun position is estimated from current time and date. Earth tilt "vary" form -23.45° (December 22) to +23.45° (June 21). Today tilt is calculated with this equation.
Made by Spope.
You can also look at my other space project, Curiosity's Trip