All the actions below need superuser privileges

To install it simply use apt-get:

$ apt-get install chrony

Once you’ve installed chrony you need to select your current time zone:

$ tzselect

To make sure it is selected on every boot I just export the TZ environment variable in my /etc/rc.local

$ vi /etc/rc.local

And add the following lines:
# Export timezone
TZ=’Europe/Brussels’; export TZ

I found doing the above was not enough, so I also edited my /etc/timezone file and added the correct time zone there:

$ echo "Europe/Brussels" > /etc/timezone

And still it wasn’t enough, so I reconfigured the package tzdata

$ dpkg-reconfigure tzdata

And finally that did it! To make sure it would still be correct on a future reboot I rebooted my machine:

$ reboot