yes, timezone for groups (i'm using instant config mode) is UTC.
it seems that anything that is predefined report related (including RAPIDS reports) show time in EDT, but i see no way to change it.
all predefined reports (network usage, rf health etc) show their generation time in EDT. All reports under Definitions (where are predefined reports) are using EDT time.
i'm pretty sure i haven't put EDT anywhere, as i'm living in europe (actual timezone is EET or eastern european time).
for example, i can make a new generated report under Reports->Definitions, but for some reason it shows EDT as scheduling time option and no ways to change it.
i just took the screenshot, so the actual time when taken screenshot was 16:11 UTC. Why is shows Current Local Time in EDT is beyond me.
it was the same with previous 8.2.2.1 (just recently upgraded to 8.2.3.1).
even more strange: events under RAPIDS->Audit Log show UTC time (i think they are event logs), but events under RAPIDS->Events show EDT time.