For quite some time now we’ve had the odd thing that all the clocks on our Citrix VDI-in-a-Box virtual desktops have been out by 7 hours. First thought was that the sysprep process was putting in the wrong timezone however if this was the case then surely there would be some people having the same issues and posting up on the Citrix forums?
After a little digging I found that the clocks were only out when logging in from our 10zig thin clients. As it turns out the 10zigs all had their timezone settings set to Phoenix in the USA (the homebase of 10zig) and so were 7 hours out. This can only mean that the thin clients (I guess through HDX) were telling the Virtual Desktops to match up with their time zones.
A quick change in the settings of the thin clients soon sorted it out and now all the clocks are showing correctly. The two screen shots below show the places you want to be looking at to update the thin clients to your own timezone-