Question:

When you refer the Brokering Time from Citrix Studio in Citrix Cloud environment, you will notice that the time
is displayed in UTC timezone. So is there any way to customize the timezone which customer prefers.

Answer:

Currently the Brokering Time from Citrix Studio is using the Delivery Controller server's timezone. In the background Citrix upgrades the Delivery Controller regularly 
and this upgrade will initialize the timezone to UTC again. There is no way to change the Delivery Controller timezone permanently.
 

Brokering Time is Not possible to customize in Citrix Cloud environment