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  2. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    Many computer systems measure time and date using Unix time, an international standard for digital timekeeping.Unix time is defined as the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (an arbitrarily chosen time based on the creation of the first Unix system), which has been dubbed the Unix epoch.

  3. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    The quotient is the number of days since the epoch, and the modulus is the number of seconds since midnight UTC on that day. If given a Unix time number that is ambiguous due to a positive leap second, this algorithm interprets it as the time just after midnight. It never generates a time that is during a leap second.

  4. Time formatting and storage bugs - Wikipedia

    en.wikipedia.org/wiki/Time_formatting_and...

    On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...

  5. Epoch (computing) - Wikipedia

    en.wikipedia.org/wiki/Epoch_(computing)

    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 ...

  6. System time - Wikipedia

    en.wikipedia.org/wiki/System_time

    For example, the Unix system time 1 000 000 000 seconds since the beginning of the epoch translates into the calendar time 9 September 2001 01:46:40 UT. Library subroutines that handle such conversions may also deal with adjustments for time zones , daylight saving time (DST), leap seconds, and the user's locale settings.

  7. tz database - Wikipedia

    en.wikipedia.org/wiki/Tz_database

    The database attempts to record historical time zones and all civil changes since 1970, the Unix time epoch. [7] It also records leap seconds. [8] The database, as well as some reference source code, is in the public domain. [9] New editions of the database and code are published as changes warrant, usually several times per year. [10]

  8. The Surprising Relationship Between Oral Health and IBD - AOL

    www.aol.com/surprising-relationship-between-oral...

    Credit - Carol Yepes—Getty Images. L enette Sparacino has had dental issues for as long as she can remember. “I’ve probably had at least 30 cavities over my lifetime, if not more,” she ...

  9. Epoch - Wikipedia

    en.wikipedia.org/wiki/Epoch

    For example, Unix time is represented as the number of seconds since 00:00:00 UTC on 1 January 1970, not counting leap seconds. An epoch in astronomy is a reference time used for consistency in calculation of positions and orbits. A common astronomical epoch is J2000, which is noon on January 1, 2000, Terrestrial Time.