Unix Timestamp Guide: Epoch Time for Developers
Understand Unix timestamps: epoch origin, 32-bit overflow, milliseconds vs seconds, and converting between timestamps and human-readable dates.
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Tags: developer-tools, timestamps, unix
Unix Timestamp Guide: Everything Developers Need to Know About Epoch Time Unix timestamps are the backbone of date/time handling in software. They appear in API responses, database records, log files, and JWT tokens. If you write code, you will deal with them daily. This guide covers everything — what they are, the units trap that bites everyone, the Y2K38 problem, and how to convert them in every major language. --- What Is a Unix Timestamp? A Unix timestamp is an integer that represents a point in time as the number of seconds elapsed since January 1, 1970, 00:00:00 UTC — a reference point called the Unix epoch. The timestamp has no timezone. It is always UTC. That is the entire point — a single number that unambiguously identifies a moment in time, regardless of where you are on Earth.…
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