When using a SharePoint Date only column, it is stored in SharePoint as a DateTime value and takes the site's Regional Time Zone setting and daylight saving into account.

If this column is exposed in SmartForms, SmartForms's calendar control is able to handle the display of this date field accordingly or as configured.

However if this item reference is used within a email event within a workflow, it is just returned the DateTime in UTC. We can convert this UTC value to applicable timezone with Add/Subtract hours, however daylight saving is not taken into account.

Would like perhaps a DateTime function to return if Daylight Saving is currently active or not.