The END Of Computer Time, If Not Fixed, Is January 19, 2038

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2 years ago
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The Year 2038 problem (also known as Y2038, Y2K38, the Epochalypse, or the Friday 13th Bug) is a time formatting bug in computer systems with representing times after 03:14:07 UTC on 19 January 2038.

By coincidence, the date to which vulnerable systems will reset is a Friday the 13th.

The problem exists in systems which measure Unix time — the number of seconds elapsed since the Unix epoch (00:00:00 UTC on 1 January 1970) — and store it in a signed 32-bit integer. The data type is only capable of representing integers between −(231) and 231 − 1, meaning the latest time that can be properly encoded is 231 − 1 seconds after epoch (03:14:07 UTC on 19 January 2038). Attempting to increment to the following second (03:14:08) will cause the integer to overflow, setting its value to −(231) which systems will interpret as 231 seconds before epoch (20:45:52 UTC on 13 December 1901). The problem is similar in nature to the Year 2000 problem.

Computer systems that use time for critical computations may encounter fatal errors if the Y2038 problem is not addressed. Some applications that use future dates have already encountered the bug. The most vulnerable systems are those which are infrequently or never updated, such as legacy and embedded systems. There is no universal solution to the problem, though many modern systems have been upgraded to measure Unix time with signed 64-bit integers which will not overflow for 292 billion years.

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