The system time on Airwave is in PST
From CLI -
[root@Aruba-Airwave mercury]# date
Tue Mar 7 09:46:09 PST 2017
However the time in graphs/charts is incorrect.
There is a new feature on Airwave 8.2 to set time zone of the graphs/charts to UTC or to system time.
This configuration option is available under AMP Setup - General page.
If the option is set to Browser Local, it will take the browser time, else it will take UTC time zone
This is a global configuration which will impact all users which have enabled below in the Home - User Info Tab.
if a user wants to over ride the system defaults, UTC or browser local time can also be selected.