In log4net layouts I can use %utcdate to print the UTC date time in ISO format. I use this on all my .Net services to ensure consistency across different boxes and even different environment installations. I don't see this pattern token in the log4j documentation.

So I assume that %utcdate or some equivalent is not present in the Lightstreamer "com.lightstreamer.logback.RelativeFileAppenders$R ollingFileAppender" appender

What can I do to achieve a UTC datetime in the logs, short of setting the machine timezone to UTC?