Which time standard does the IIS server use to log timestamps in IIS logs?

IIS (Internet Information Services) logs timestamps in Coordinated Universal Time (UTC). This choice is correct because UTC provides a stable and consistent time reference, which is essential for various applications, including web server logging. By using UTC, IIS enables logs to avoid the complications that arise from time zone differences and Daylight Saving Time adjustments.

This standardization is particularly useful for forensic analysis, as it allows for a uniform basis for comparing timestamps from different systems or locations, which may operate in different time zones. By adhering to UTC, the logs maintain accuracy and facilitate easier correlation of events that may occur simultaneously across different regions.

Other time standards, like GMT, EST, and PST, are regional and can introduce inconsistencies in event logging if servers are accessed from different parts of the world. While GMT is similar to UTC, it is not as widely adopted for server logging purposes, and EST and PST are specific to North America and subject to changes, limiting their effectiveness in a global context.