Welcome to UiPath community
once after reading datatable pass that dt to FOR EACH ROW activity as input and inside the loop use a assign activity like this
row(“column name of date”) = row(“Column name of date”).ToString.SubString(0,10).ToString.Trim
or
if we want in specific format we can mention that format in ToString(format we want)
row(“Column name of date”) = Convert.ToDatetime(CurrentRow(“Column name of date”)).ToString(“yyyy-MM-dd”)
for more details on diffferent date format
Hope this would help you
Cheers