The third brightest object in the sky is the ISS – the International Space Station.
NASA has made a simple site that guides when to spot the ISS, depending on where on Earth you are located. Click on image below to find the guide.

Current location

You can see the station’s current position here.

Be sure to click the button “Snapshot” to open an extra map of the current ground area in a new window.

Some facts:

• The ISS is maintained in a nearly circular orbit with a minimum mean altitude of 330 km (205 mi) and a maximum of 410 km (255 mi), in the centre of the Thermosphere, at an inclination of 51.6 degrees to Earth’s equator.
• It travels at an average speed of 27,724 kilometres (17,227 mi) per hour, and completes 15.410 orbits per day

Read more about the ISS on Wikipedia