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Unix time has historically been encoded as a signed 32-bit integer, a data type composed of 32 binary digits (bits) which represent an integer value, with 'signed' meaning that the number can represent both positive and negative numbers, as well as zero; and is usually stored in two's complement format.
The Network Time Protocol has an overflow issue related to the Year 2038 problem, which manifests itself at 06:28:16 UTC on 7 February 2036, rather than 2038. The 64-bit timestamps used by NTP consist of a 32-bit part for seconds and a 32-bit part for fractional second, giving NTP a time scale that rolls over every 2 32 seconds (136 years) and ...
The GPS week number rollover is a phenomenon that happens every 1,024 weeks, which is about 19.6 years. The Global Positioning System (GPS) broadcasts a date, including a week number counter that is stored in only ten binary digits, whose range is therefore 0–1,023.
A similar problem will occur in 2038 (the year 2038 problem), as many Unix-like systems calculate the time in seconds since 1 January 1970, and store this number as a 32-bit signed integer, for which the maximum possible value is 2 31 − 1 (2,147,483,647) seconds. [50] 2,147,483,647 seconds equals 68 years, and 2038 is 68 years forward from 1970.
And there have been variations over the years (e.g. some MS-DOS C compilers used the FAT filesystem's timestamp representation of 2-second intervals since a January 1, 1980 epoch in the local time zone). The year-2038 problem exists because POSIX (probably in an effort to maintain backward compatibility with legacy software making unwarranted ...
Software timekeeping systems vary widely in the resolution of time measurement; some systems may use time units as large as a day, while others may use nanoseconds.For example, for an epoch date of midnight UTC (00:00) on 1 January 1900, and a time unit of a second, the time of the midnight (24:00) between 1 January 1900 and 2 January 1900 is represented by the number 86400, the number of ...
Conservative activists searching for traces of voter fraud are seizing on posts made on social media misinterpreting Michigan’s voter file. In a post to X that had been seen more than 5 million ...
Year 2038 problem: a time formatting bug in computer systems with representing times after 03:14:07 UTC on 19 January 2038; GPS week number rollover: time keeping integer rollover caused by the design of the Global Positioning System, which occurs every 19.6 years; 512k day: an event in 2014, involving a software limitation in network routers