Script for fixing future dates in Skype chat history. On running, lets the user choose a Skype history file and shifts the timestamp of future messages to the past by a specified number of days. Background: message dates in Skype chat are given timestamps according to computer date/time on message receival, and they are sorted in the chat history by timestamp. For example, if the computer's date/time was one month in the future when the messages were received, then after fixing the computer date/time, new messages in Skype chat history will be added BEFORE the incorrectly timestamped messages, making it very hard to use Skype chat until the original future date is reached. Uses Python's Tkinter GUI module, should run on all systems. A compiled EXE has been provided for Windows.