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How to convert date/time attributes in Active Directory to standard time format

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This article describes how attributes that contain a date/time value can be converted to standard meaningful date/time formats.

Applies to:   Windows Server 2012 R2, Windows 10 - all editions
Original KB number:   555936

Summary

The Active Directory stores date/time values as the number of 100-nanosecond intervals that have elapsed since the 0 hour on January 1, 1601 until the date/time that is being stored. The time is always stored in Greenwich Mean Time (GMT) in the Active Directory. Some examples of Active Directory attributes that store date/time values are LastLogon, LastLogonTimestamp, and LastPwdSet. In order to obtain the date/time value stored in these attributes into a standard format, some conversion is required. This article describes how this conversion can be done.

Procedure

  1. Obtain the value of the Active Directory attribute that you want to convert. There are many ways to extract values of Active Directory attributes. Using ADSI Edit is one method.
  2. Open the Command Prompt.
  3. Type the following command:
    w32tm.exe /ntte [time in Windows NT time format]
  4. The date/time value is converted to local time and displayed.

Example

The command w32tm.exe /ntte 128271382742968750 will yield "148462 05:57:54.2968750 - 6/24/2007 8:57:54 AM (local time)" on a computer that is in a time zone three hours ahead of Greenwich Mean Time (GMT +3:00). Notice that the first half of the output displays the time in GMT (05:57:54) and then converts it by adding the Time Zone Offset (8:57:54).

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