In a linux/unix system, the time is the number of seconds elapsed since midnight UTC on the morning of January 1, 1970, not counting leap seconds.
There are different ways and procedures to change timezones in different flavors of linux/unix (which i will explain later in this HowTo) but universla procedure to do it in all flavors is explained below:
How can i change/update date/time/timezone in FreeBSD from command line?
Changing date/time in FreeBSD operating system is not much different from what we use in normal linux operating systems which i had explained in this howto: Change date/time in linux from command prompt.
Simply type the date command to display the current date: