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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. List of non-standard dates - Wikipedia

    en.wikipedia.org/wiki/List_of_non-standard_dates

    Microsoft Excel displays the day before January 1, 1900 (the earliest date it can represent) as January 0, 1900. [17] It also treats 1900 incorrectly as a leap year (whereas only centuries divisible by 400 are), so it displays the day before March 1, 1900 as the non-existent February 29 instead of February 28. This means March 1, 1900 is the ...

  4. Time formatting and storage bugs - Wikipedia

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

    This problem can be seen in the spreadsheet program Microsoft Excel as of 2023, which stores dates as the number of days since 31 December 1899 (day 1 is 1 January 1900) with a fictional leap day in 1900 if using the default 1900 date system. Alternatively, if using the 1904 date system, the date is stored as the number of days since 1 January ...

  5. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Excel supports dates with years in the range 1900–9999, except that December 31, 1899, can be entered as 0 and is displayed as 0-jan-1900. Converting a fraction of a day into hours, minutes and days by treating it as a moment on the day January 1, 1900, does not work for a negative fraction. [86]

  6. Lotus 1-2-3 - Wikipedia

    en.wikipedia.org/wiki/Lotus_1-2-3

    Lotus 1-2-3 assumes that 1900 is a leap year. This is incorrect as while 1900 is a year that is divisible by four, years divisible by 100 are not counted as leap years unless divisible by 400. [90] This bug persists today as its competitor, Microsoft Excel, still incorporates the bug to ensure compatibility with legacy Lotus 1-2-3 spreadsheets ...

  7. 6 Pennies from the 1900s Worth a Lot of Money - AOL

    www.aol.com/6-pennies-1900s-worth-lot-170027031.html

    Doubling is seen on the obverse in the inscription and date, but not the S mintmark. Experts believe this issue is worth more than $30,000. ... Old Navy's Break a Sweat Sale has activewear from $2 ...

  8. History of Microsoft Office - Wikipedia

    en.wikipedia.org/wiki/History_of_Microsoft_Office

    This is a history of the various versions of Microsoft Office, consisting of a bundle of several different applications which changed over time.This table only includes final releases and not pre-release or beta software.

  9. Retirees 65 and Older Eligible for Extra Standard Deduction ...

    www.aol.com/retirees-65-older-eligible-extra...

    For tax year 2023, the additional standard deduction amounts for taxpayers who are 65 and older OR blind are: $1,850 for single or head of household. $1,500 for married taxpayers (per qualifying ...