This is mainly a note for me, but I think that it may be useful also for other users.
Most Unix based systems keep system time as UTC. If you are on a different time zone, you can set your own time zone, on a per user basis. Open your ~/.bashrc file and set up TZ environment variable:
export TZ="/usr/share/zoneinfo/{TIMEZONE-DIRECTORY}/{TIMEZONE_FILE}
For example, for Europe/Rome time zone:
export TZ="/usr/share/zoneinfo/Europe/Rome"