Time stamp in S&OP system

Guys,

Our S&OP servers are running in EST timezone but out  Data Integration shows UTC timezone...I remember reading some thing about UTC timestamp  in Data integration HANA procedures but I can't recollect now.

I have few questions and any insights appreciated.

1)  Are there are any app or user level settings for timezone (I did check global parameters and didn't find any clues) in S&OP.

2) How to determine what time stamp being used by WEB UI or Excel UI?

Thanks,

Krishna