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  2. Leap year problem - Wikipedia

    en.wikipedia.org/wiki/Leap_year_problem

    The leap year problem (also known as the leap year bug or the leap day bug) is a problem for both digital (computer-related) and non-digital documentation and data storage situations which results from errors in the calculation of which years are leap years, or from manipulating dates without regard to the difference between leap years and common years.

  3. 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 ...

  4. Calendar (Windows) - Wikipedia

    en.wikipedia.org/wiki/Calendar_(Windows)

    Calendar has preset server configurations for Outlook.com, Exchange, Google Calendar, and iCloud Calendar. [7] [8] [9] Users can set it to use the system theme or choose a custom accent color, background image, and light/dark preference. Windows 10 Calendar has multi-window support for viewing and editing events.

  5. Access your AOL Calendar

    help.aol.com/articles/aol-calendar-faqs

    To sync schedules and simplify event planning, subscribe to someone else's calendar or share your own. AOL Calendar is only available on desktop web browsers and AOL Desktop Gold. 1. Sign in to AOL Mail. 2. Click Calendar. 3. Click Calendar full view. 4. Check our help articles for more info about AOL Calendar.

  6. Perpetual calendar - Wikipedia

    en.wikipedia.org/wiki/Perpetual_calendar

    A table for the Gregorian calendar expresses its 400-year grand cycle: 303 common years and 97 leap years total to 146,097 days, or exactly 20,871 weeks. This cycle breaks down into one 100-year period with 25 leap years, making 36,525 days, or one day less than 5,218 full weeks; and three 100-year periods with 24 leap years each, making 36,524 ...

  7. 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 ...

  8. AOL

    search.aol.com

    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  9. Old Style leap year starting on Friday - Wikipedia

    en.wikipedia.org/wiki/Old_Style_leap_year...

    This is the calendar for any Old Style leap year starting on Friday, 25 March. The Old Style calendar ended the following March, on 24 March. Examples: Julian year 1552, 1636 or 1720 (see bottom tables). A leap year is a year with 366 days, as compared to a common year, which has 365.