Setting your timezone
Install the tzdata package. Upon doing so, you should have a bunch of files in /usr/share/zoneinfo.
Symlink the appropriate file to /etc/localtime to set your timezone. Example:
ln -sf /usr/share/zoneinfo/America/Chicago /etc/localtime
NTP
To make sure your systems clock stays accurate, you should install an ntp daemon. Currently, the only option supported by Basix is OpenBSD's OpenNTPD.
To set this up, install the openntpd package and enable its service.