How to create a column UTC-3 based on a UTC0 column?

How to create a column UTC-3 base on a UTC0 column?

I have a comune with UTC0 data in Date format. I need to create a presonal tyaking the same value of this columns but converting to a UYTC-3 date format...

How do I get this?
Can someone help me?

You should be able to do this with the ConvertTimezone feature that we introduced in v45

Thank you for your answear. I will update my MB and try it!