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  2. Year 1900 problem - Wikipedia

    en.wikipedia.org/wiki/Year_1900_problem

    Microsoft Excel (using the default 1900 Date System) cannot display dates before the year 1900, although this is not due to a two-digit integer being used to represent the year: Excel uses a floating-point number to store dates and times. The number 1.0 represents the first second of January 1, 1900, in the 1900 Date System (or January 2, 1904 ...

  3. Time formatting and storage bugs - Wikipedia

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

    Time formatting and storage bugs. In computer science, data type limitations and software bugs can cause errors in time and date calculation or display. These are most commonly manifestations of arithmetic overflow, but can also be the result of other issues. The most well-known consequence of this type is the Y2K problem, but many other ...

  4. Year 2000 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2000_problem

    An electronic sign at École centrale de Nantes on 3 January 2000, incorrectly displaying the year as 1900. Translation: "Welcome to the Central School of Nantes 12:09 3 January 1900." The term year 2000 problem, [ 1 ] or simply Y2K, refers to potential computer errors related to the formatting and storage of calendar data for dates in and ...

  5. Epoch (computing) - Wikipedia

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

    Epoch (computing) In computing, an epoch is a fixed date and time used as a reference from which a computer measures system time. Most computer systems determine time as a number representing the seconds removed from a particular arbitrary date and time. For instance, Unix and POSIX measure time as the number of seconds that have passed since ...

  6. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    The format dd.mm.yyyy using dots (which denote ordinal numbering) is the traditional German date format. [65] Since 1996-05-01, the international format yyyy-mm-dd has become the official standard date format, but the handwritten form d. mmmm yyyy is also accepted (see DIN 5008). Standardisation applies to all applications in the scope of the ...

  7. Microsoft Office XML formats - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Office_XML_formats

    The Microsoft Office XML formats are XML -based document formats (or XML schemas) introduced in versions of Microsoft Office prior to Office 2007. Microsoft Office XP introduced a new XML format for storing Excel spreadsheets and Office 2003 added an XML-based format for Word documents. These formats were succeeded by Office Open XML (ECMA-376 ...

  8. Date and time notation in the United States - Wikipedia

    en.wikipedia.org/wiki/Date_and_time_notation_in...

    In traditional American usage, dates are written in the month–day–year order (e.g. September 17, 2024) with a comma before and after the year if it is not at the end of a sentence [2] and time in 12-hour notation (11:47 am). International date and time formats typically follow the ISO 8601 format (2024-09-17) for all-numeric dates, [3 ...

  9. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS. It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA). Excel forms part of the Microsoft 365 suite of software.