The other day, I worked with IIS, which has been a while. I looked at the logs with a coworker and noticed the time was off. At first, we looked at the Server time, and it was correct. But the records were way off.
IIS supports three different log file types. These log file types indicate the time zone of the logs:
W3C (default format) = UTC time zone IIS = Local time NCSA = Local time zone