Epoch Time, also known as Unix Time, is a system for tracking time that counts the number of seconds that have passed since January 1, 1970, at 00:00:00 UTC. This date is referred to as the "epoch." It is widely used in computing and programming because it provides a simple and consistent way to represent time. The main advantage of Epoch Time is its ability to easily handle time calculations, such as determining the difference between two dates. Since it is a single integer value, it simplifies tasks like sorting and comparing timestamps across different systems and programming languages.