Datetime Expression adjusts for Daylight Savings Time

Please add a function to the expression editor that will account for daylight savings time on a date field. The Addhours function in the DateTime category of the expression editor allows you to display UTC time in a different time zone. However, there does not appear to be a function to account for Daylight Savings time. Granted the hours value in the Addhours function could be changed manually to account for it, however when printing a records where records in the same field could fall in standard time or in daylight savings time, one of them the times will be off.