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IIS W3C Extended Log File Format GMT

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8:21 am
October 24, 2007



Hi guys,

 I have a site running on Windows Server 2003 on IIS 6.0 and have just set up AWSTATS for the marketing team to use for analysis.

 The problem I have and what appears to be a known issue is that the W3C Extended Log File Format logs in GMT and ignores the local server time. I have tried using the LoadPlugin="timezone +10" in the conf file (I am in Sydney and we are GMT+10). This works only to a certain degree.

When I process a log file now, AWSTATS reads the stats as the first hit in the file from 10am and the last hit from 10am the next day – however it displays correctly in the "hours" section.

Ie. The below gives an illustration of what I mean. My site has daily log files. I have processed just 1 log file from a Tuesday which has some of the results going into Wednesday because the LoadPlugin="timezone +10" has been used.

Day     Pages      Hits         Bandwidth
Mon     0            0            0
Tue     3140.25   21451.75 112.20 MB
Wed    709.25     5104.75   25.44 MB
Thu     0            0            0
Fri       0            0             0
Sat      0            0             0
Sun     0            0             0

 Does anyone have any experience with resolving this issue?

 Kind Regards

8:49 am
October 24, 2007



posts 1125

If I understand correctly, your log file uses GMT and there is a new log file every day (GMT day). So the log file for Tuesday contains hits from Tuesday 00:01 GMT till Tuesday 23:59 GMT. The plugin converts these in hits from Tuesday 10:01 (Sydney time) till Wednesday 09:59 (Sydney time). Nothing wrong with that in my opinion or did I miss your point ?


10:36 am
October 25, 2007




Yes that is correct. The only problem I had with that was at the top of the Awstats screen there is a note saying time of the first visit, and time of the last visit. This was still showing as:

First Visit: Tuesday 10:01

Last Visit: Wednesday 09:59
(Even though in reality it was from 0:00 to 11:59 on Tues.)

I have since rectified my issue by ticking the "use local server time for log file rollover"

The log file now gets created at the stroke of midnight (local time) and everything is in sync. Previously, the log file was being created at midnight GMT (10am here in Syd)

All sorted Thanks !

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