Convert Unix Time to Excel Date and Time

In this tutorial, we will work with data taken from an aircraft's navigation system, providing details about the geographic position of the aircraft, its altitude and the time at which each data point was recorded. To make the data processable in Excel, we will convert the given Unix timestamp into an Excel date and time, split the combined latitude/longitude column into two separate columns, and visualize the course of the flight using 3D Map in Excel.
The data can be downloaded here:
www.dropbox.com/s/n66dqrav3ng...