Returns a timestamp of the current time from the system clock for a specified time zone. The timezone is specified as a string containing any of the geographical places listed under Time Zone in the Windows Control Panel for Date and Time or as a string in the form 'GMT+hh:mm' or 'UTC+hh:mm'. If no timezone is specified the local time will be returned. If ignoreDST is -1 (true) daylight savings time will be ignored.
This was enough to lead me on the right path. I hoped for an example but I got it quite well.
I used this to create my timestamp:
timestamp(Timestamp#([Date/Time],'YYYY/MM/DD hh:mm TT' ),'DD.MM.YYYY hh:mm') as timestamp,
One question the expression above with just timestamp# generated a numeric value, easiest to see by the orientation in a table.(left is default for strings and right for numeric values). But when I look on table viewer preview, I just see the normal timestamp as string?