Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.
The way this page works is that it downloads the selected satellite's predicted position from the Predict engine for the next 3 hours. The position of the satellite will update when the satellite moves 1/2 degree in either latitude or longitude.
You can disconnect your computer from your internet service provider for the period when the computer is using the predictions downloaded from the server (while the satellite is following it's track) however after that time you will need to reconnect or the page will cease to function and display an error. An error will also occur if you are trying to change satellites during offline operation. 2b1af7f3a8