It is possible to do this in Homestead 2.x,

After you initialise a homestead folder, an after.sh file will be created along-side your homestead.yaml file in ~/.homestead.

This file will be run after the provisioning of the new VM. So all you need to do is add:

ln -sf /usr/share/zoneinfo/Pacific/Auckland /etc/localtime

into the file and provision the VM. Done. (You'll need to adjust the path for your own locale).

Run ls /usr/share/zoneinfo to list all the timezones you can use. :)

More info on that here: http://www.how2centos.com/centos-change-timezone/

Thanks this works great, and also thanks for putting in the command to list the timezones.

Wish I could bookmark this answer!

Cheers