You can load multiple clock drivers, but you cant change any of them from the default time set in the XP8

You can however link to on line clocks and just display the page in a small viewer [Link: time.gov]

Clock
The Clock driver makes the XP-8 system clock time available as a set of system variables. These variables can be used to display the time on any device capable of two-way communications, even those that do not have an internal clock (such as the T2-C).
The Clock driver also provides several variables that can be used along with image lists to display the time in a graphical format.


You can however load multiple weather drivers, which I did for an air line customer so they would know what the weather was in 10 different cities, I used the air port zip codes for this. but this wont give you the time