This article explores how time is represented in computers, explains historic bugs like the Y2K and the upcoming 2038 issue, clarifies GMT/UTC, time zones and daylight saving, and compares 32‑bit and 64‑bit timestamps, Java long handling, and architectural differences that affect time calculations.
This article recounts the origin of the Unix epoch, explains why a single integer counting seconds from 1 January 1970 was adopted, outlines its advantages, and discusses the 32‑bit Y2K38 limitation and the shift to 64‑bit timestamps.
The article explains how the Y2K "millennium bug"—a time‑representation flaw in early computer systems—triggered worldwide panic, prompted massive code rewrites, and left lasting lessons for programmers, while also introducing the related 2038 Unix time problem.
From the panic of the 1999 Y2K transition to the lingering 2038 Unix time overflow, this article explains how early memory‑saving date formats caused massive system failures, the emergency fixes applied, and the lasting lessons programmers must heed when handling time in software.
