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  2. Template:Age in years, months, weeks and days - Wikipedia

    en.wikipedia.org/wiki/Template:Age_in_years...

    Note that all parameters default to the current date, so for example, the second set of parameters can be left out to calculate elapsed time since a past date: { {Age in years, months, weeks and days |month1 = 1 |day1 = 1 |year1 = 1 }} → 2022 years, 10 months, 3 weeks and 5 days. Or simply, using the simpler parameter names, compatible with ...

  3. Template:Time interval - Wikipedia

    en.wikipedia.org/wiki/Template:Time_interval

    Template:Time interval. Template documentation[ view ] [ edit ] [ history ] [ purge ] This template uses Lua : Module:Age ( sandbox) Module:Date ( sandbox) This template calculates the date/time difference between two dates. Dates in the Gregorian calendar from 9999 BCE to 9999 CE are supported. The calendar is proleptic—it is assumed to ...

  4. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    The year 2038 problem (also known as Y2038, [1] Y2K38 or Y2K38 superbug) and the year 2106 problem (also known as Y2106, Y2K106, Y2K106 superbug or the Epochalypse [2] [3]) are time computing problems that leave some computer systems unable to represent times after 03:14:07 UTC on 19 January 2038 and 06:28:15 UTC on 7 February 2106 respectively ...

  5. Determination of the day of the week - Wikipedia

    en.wikipedia.org/wiki/Determination_of_the_day...

    The basic approach of nearly all of the methods to calculate the day of the week begins by starting from an "anchor date": a known pair (such as 1 January 1800 as a Wednesday), determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical day of the week.

  6. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    A plot of hours of daylight as a function of the date for changing latitudes. This plot was created using the simple sunrise equation, approximating the sun as a single point and does not take into account effects caused by the atmosphere or the diameter of the Sun. The sunrise equation or sunset equation can be used to derive the time of ...

  7. Calendrical calculation - Wikipedia

    en.wikipedia.org/wiki/Calendrical_calculation

    The number of days between two dates, which is simply the difference in their Julian day numbers. The dates of moveable holidays, like Christian Easter (the calculation is known as Computus) followed up by Ascension Thursday and Pentecost or Advent Sundays, or the Jewish Passover, for a given year. Converting a date between different calendars.

  8. Unix time - Wikipedia

    en.wikipedia.org/wiki/Unix_time

    Unix time is currently defined as the number of non-leap seconds which have passed since 00:00:00 UTC on Thursday, 1 January 1970, which is referred to as the Unix epoch. [3] Unix time is typically encoded as a signed integer . The Unix time 0 is exactly midnight UTC on 1 January 1970, with Unix time incrementing by 1 for every non-leap second ...

  9. Timestamp - Wikipedia

    en.wikipedia.org/wiki/Timestamp

    An actual time- stamp from around 1960. A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day, sometimes accurate to a small fraction of a second. Timestamps do not have to be based on some absolute notion of time, however.