That's clientside as well as server side, also not all status have timers.
https://github.com/ROClientSide/Translation/blob/master/data/luafiles514/lua%20files/stateicon/stateiconinfo.lub
All Skills having
haveTimeLimit = 1,
Would show it...
Also , You need >= 2013 client I guess..
I see.
Another question, at the moment my buffs looks like this:
How can I change them like in the first post?