Thank you All for your tips. FYI I decided to use simple approach: choose proper time zone in workflow's properties. With this settings time is converted into desired time zone directly in Data extraction (file) activity without any additional code (so I'm not saving it in temp table).
Venu, I have additional questions to your post:
- What is this option name?
- How properly use 'Taken into account if' ?
Thank you,
Marcin