Tacppd use several logfiles for provide information with several levels. Also it can use database tables for store some logging information. Every logfile entry starts with fragment with data and time, divided from other part of string by brackets []. In common way it looks like [2003/02/18-03-23:10:56] when you can see year/month/day-day_of_week-hour:minute:second. All data gets from localhost clock, and writes in local timezone. In later releases possible deprecate field with day of week value.