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  2. C date and time functions - Wikipedia

    en.wikipedia.org/wiki/C_date_and_time_functions

    The C date and time functions are a group of functions in the standard library of the C programming language implementing date and time manipulation operations. [1] They provide support for time acquisition, conversion between date formats, and formatted output to strings.

  3. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    The C standard library uses Unix time for all date and time functions, and Unix time is sometimes referred to as time_t, the name of the data type used for timestamps in C and C++. C's Unix time functions are defined as the system time API in the POSIX specification. [15]

  4. Category:C standard library - Wikipedia

    en.wikipedia.org/wiki/Category:C_standard_library

    C. C character classification; C date and time functions; C dynamic memory allocation; C file input/output; C localization functions; C mathematical functions; C process control; C signal handling; C data types; Crt0

  5. Module:Date - Wikipedia

    en.wikipedia.org/wiki/Module:Date

    This module provides date functions for use by other modules. Dates in the Gregorian calendar and the Julian calendar are supported, from 9999 BCE to 9999 CE. The calendars are proleptic—they are assumed to apply at all times with no irregularities.

  6. Module:Date/doc - Wikipedia

    en.wikipedia.org/wiki/Module:Date/doc

    A date, with an optional time, can be specified in a variety of formats, and can be converted for display using a variety of formats, for example, 1 April 2016 or April 1, 2016. The properties of a date include its Julian date and its Gregorian serial date, as well as the day-of-week and day-of-year.

  7. Calendar date - Wikipedia

    en.wikipedia.org/wiki/Calendar_date

    A calendar date is a reference to a particular day represented within a calendar system. The calendar date allows the specific day to be identified. The number of days between two dates may be calculated. For example, "25 December 2024" is ten days after "15 December 2024". The date of a particular event depends on the observed time zone.

  8. 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. [7]

  9. Category:Time - Wikipedia

    en.wikipedia.org/wiki/Category:Time

    Time is a measure of duration. ... Date and time representation (1 C, 21 P) Duration (9 C, ... C. C date and time functions; Causality; Causality (physics) ...