title 32-Bit Windows Time-Date Formats | Microsoft Docs ms.custom ms.date 11/04/2016 ms.reviewer ms.suite ms.technology cpp-standard-libraries ms.tgt_pltfrm ms.topic article f1_keywords vc.time dev_langs C++ helpviewer_keywords 32-bit Windows ms.assetid ef1589db-84d7-4b24-8799-7c7a22cfe2bf caps.latest.revision 6 author corob-msft ms.author corob manager ghogen translation.priority.ht cs-cz de-de es-es fr-fr it-it ja-jp ko-kr pl-pl pt-br ru-ru tr-tr zh-cn zh-tw 32-Bit Windows Time/Date Formats The file time and the date are stored individually, using unsigned integers as bit fields. File time and date are packed as follows: Time Bit position: 0 1 2 3 4 5 6 7 8 9 A B C D E F Length: 5 6 5 Contents: hours minutes 2-second increments Value Range: 0-23 0-59 0-29 in 2-second intervals Date Bit position: 0 1 2 3 4 5 6 7 8 9 A B C D E F Length: 7 4 5 Contents: year month day Value Range: 0-119 1-12 1-31 (relative to 1980) See Also Global Constants