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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 ...
In communications messages, a date-time group (DTG) is a set of characters, usually in a prescribed format, used to express the year, the month, the day of the month, the hour of the day, the minute of the hour, and the time zone, if different from Coordinated Universal Time (UTC).
The PHP library, that this template ultimately depends on, converts out-of-range values to the next-best in-range values. As a result, some date-like values that are not actually valid dates get converted anyway. These include... all dates with zero day-of-the-month. Such a "zero-th" day of a month gets converted into the last day of the ...
Day–month–year (DMY) format—e.g., 12 January 2025 or 12 Jan 2025; Month–day–year (MDY) format—e.g., January 12, 2025 or Jan 12, 2025 ; Year–month–day (YMD) format—e.g., 2025-01-12 (also called the "all-numeric" format; used only where space is limited, such as in references and some tables and infoboxes, but not in article ...
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[a] Thus, a signed 32-bit integer can only represent integer values from −(2 31) to 2 31 − 1 inclusive. Consequently, if a signed 32-bit integer is used to store Unix time, the latest time that can be stored is 2 31 − 1 (2,147,483,647) seconds after epoch, which is 03:14:07 on Tuesday, 19 January 2038. [ 7 ]
As the majority of modern computers are 32-bit or 64-bit, and a large number of programs are still written in 32-bit compatibility mode, this means that many programs using Unix time are using signed 32-bit integer fields. The maximum value of a signed 32-bit integer is 2 31 − 1, and the minimum value is −2 31, making it impossible to ...
Standard format: 1- or 2-digit day, the spelled-out month, and 4-digit year (e.g. 4 February 2023) Civilian format: spelled out month, 1-or 2-digit day, a comma, and the 4-digit year (e.g. February 4, 2023). [12] Date Time Group format, used most often in operation orders. This format uses DDHHMMZMONYY, with DD being the two-digit day, HHMM ...