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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 ...
Converts dates into a format used on Wikipedia Template parameters [Edit template data] Parameter Description Type Status date 1 Date to be formatted Example Jan 1, 2007 Date suggested format 2 Controls the date format for the result Default DMY Example MDY String suggested The above documentation is transcluded from Template:Date/doc. (edit | history) Editors can experiment in this template's ...
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.
National standard format is yyyy-mm-dd. [161] dd.mm.yyyy format is used in some places where it is required by EU regulations, for example for best-before dates on food [162] and on driver's licenses. d/m format is used casually, when the year is obvious from the context, and for date ranges, e.g. 28-31/8 for 28–31 August.
Roman numerals are not normally used for dates. Two thousand one: 2001: Years and days of the month are not normally written in words. the first of May May the first: 1 May or May 1: June 0622: June 622: Do not zero-pad years. June 2,015: June 2015: Do not add a comma to a four-digit year. sold in the year 1995: sold in 1995
The date formatting feature ... The link targets are independent of the user-specified date format. The year has no leading zeros, e.g. "2007", "7", "7 BC".
The preference settings that a registered user can choose are displayed in the second row. The year and the day-month combination are wikilinked separately, except for dates in the ISO 8601 format. Full date formats not found in the first column are not autoformatted when wikilinked, and are likely to produce a redlink; for instance,
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 ...