http://fileformats.archiveteam.org/api.php?action=feedcontributions&feedformat=atom&user=Capsulednippers 2026-05-04T09:32:25Z User contributions MediaWiki 1.19.2 http://fileformats.archiveteam.org/wiki/MS-DOS_date/time 2020-11-29T11:30:12Z

<p>Capsulednippers: highlight that these are bitfields not day counts or 2-second counts like unix epoch dates (did not want to repeat the spec since it is linked)</p> <hr /> <div>{{FormatInfo<br /> |formattype=electronic<br /> |subcat=Elements of File Formats<br /> |released=1981<br /> }}<br /> '''MS-DOS date''' and '''MS-DOS time''' are data formats associated with [[MS-DOS]]. They are used in some file formats from the MS-DOS era.<br /> <br /> Each is a 16-bit integer of packed '''bit-fields''', not simple day or second counts since an origin (see spec below for exact bit field descriptions).<br /> <br /> '''MS-DOS date''' represents a day in the range 1980 to 2099 (or maybe 2107, but dates after 2099 aren't always correctly handled).<br /> <br /> '''MS-DOS time''' represents a 2-second interval within some day. The time is usually expected to be in &quot;local time&quot;, and there is no indication of the time zone. This makes it fairly useless in the internet age.<br /> <br /> == Specifications ==<br /> * [https://msdn.microsoft.com/en-us/library/windows/desktop/ms724247%28v=vs.85%29.aspx Windows Dev Center: DosDateTimeToFileTime function] - Describes MS-DOS date and time formats<br /> <br /> == Related formats ==<br /> Examples of file formats that use MS-DOS date/time:<br /> * [[FAT12]]<br /> * [[ZIP]]<br /> * [[LHA]]<br /> * [[Cabinet]]<br /> * [[CopyQM]]<br /> <br /> [[Category:Date and time formats]]<br /> [[Category:Microsoft]]<br /> [[Category:MS-DOS]]</div>

Capsulednippers