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Extended Log File Format Always in GMT


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Symptoms

Internet Information Server (IIS) and Internet Information Services (IIS) administrators cannot change the time format for the extended log file format to use a time zone other than Greenwich Mean Time (GMT).

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Cause

The extended log file format is defined in the W3C Working Draft WD- logfile-960323 specification by Phillip M. Hallam-Baker and Brian Behlendorf. This document defines the Date and Time files to always be in GMT:
Date
<date> = 4<digit> "-" 2<digit> "-" 2<digit> Dates are recorded in the format YYYY-MM-DD where YYYY, MM and DD stand for the numeric year, month and day respectively. All dates are specified in GMT. This format is chosen to assist collation using sort.

Time
<time> = 2<digit> ":" 2<digit> [":" 2<digit> ["." *<digit>]

Times are recorded in the form HH:MM, HH:MM:SS or HH:MM:SS.S where HH is the hour in 24 hour format, MM is minutes, and SS is seconds. All times are specified in GMT.

This behavior is by design.

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More information

For more information on the extended log file format, see the W3C Working Draft WD-logfile-960323 specification at the following URL:
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
193612 Log Files Rolled Over According to GMT, Not Local Time Zone

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Keywords: kbpending, kbprb, KB194699

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Article Info
Article ID : 194699
Revision : 6
Created on : 7/7/2008
Published on : 7/7/2008
Exists online : False
Views : 416