Unix time is a way of representing a timestamp by representing the time as the number of seconds since January 1st, 1970 at 00:00:00 UTC. One of the primary benefits of using Unix time is that it can be represented as an integer making it easier to parse and use across different systems.

Why do we use epoch time?

In a computing context, an epoch is the date and time relative to which a computer's clock and timestamp values are determined. The epoch traditionally corresponds to 0 hours, 0 minutes, and 0 seconds (00:00:00) Coordinated Universal Time (UTC) on a specific date, which varies from system to system.

Should I use Unix timestamp?

This is very useful to computer systems for tracking and sorting dated information in dynamic and distributed applications both online and client-side. The reason why Unix timestamps are used by many webmasters is that they can represent all time zones at once. For more information, read the Wikipedia article.